homeostasis
Multiple Choice
Identify the choice that best completes the statement or answers the question.
Renal Patient Blood Test Results
Urea
Uric Acid
Normal Person
0.03
0.004
Glucose
0.10
Amino Acid
0.05
Proteins
8.00
Patient I
Patient II
0.030
0.030
0.004
0.005
0.50
1.70
0.05
0.05
8.00
8.00
Patient III
0.03
0.050
0.10
0.05
8.00
Patient IV
0.03
0.004
0.10
0.06
4.00
1. From the above table, which patient has probably just eaten some sugar?
A. Patient I B. Patient II C. Patient III D. Patient IV
2. From the above table, which patient is most likely experiencing capsular failure?
A. Patient I B. Patient II C. Patient III D. Patient IV
3. From the above table, which patient has probably eaten a meal with a high protein content?
A. Patient I B. Patient II C. Patient III D. Patient IV
Substance
X
In Bowman's Capsule
0.1 g/L
In Urine
0.1 g/L
Y
Z
0.1 g/L
0.1 g/L
1.0 g/L
0.0 g/L
4. The above table shows the results of an experiment on the functioning of a mammalian kidney. The following
item is based on an analysis of the data. Substance X was likely
A. reabsorbed in the tubules B. not reabsorbed and not secreted by tubule cells C. reabsorbed in the tubules
and secreted by tubule cells D. secreted by tubule cells and not filtered through the glomerulus E. reabsorbed
in the tubules and not secreted by tubule cells
5. The above table shows the results of an experiment on the functioning of a mammalian kidney. The following
item is based on an analysis of the data. Substance Y was likely
A. reabsorbed in the tubules B. not reabsorbed, and secreted by tubule cells C. reabsorbed in the tubules and
secreted by tubule cells D. secreted by tubule cells and not filtered through the glomerulus E. reabsorbed in
the tubules, and not secreted by tubule cells
6. The above table shows the results of an experiment on the functioning of a mammalian kidney. The following
item is based on an analysis of the data. Substance Z was likely
A. reabsorbed in the tubules B. not reabsorbed and not secreted by tubule cells C. reabsorbed in the tubules
and secreted by tubule cells D. secreted by tubule cells and not filtered through the glomerulus E. reabsorbed
in the tubules and not secreted by tubule cells
7. In a research laboratory, an anaesthetized mouse has a fine tube inserted into one of its ureters. The number of
drops of urine excreted from the fine tube increases dramatically when a small amount of concentrated glucose
solution is injected into a vein The best explanation of this phenomenon is that
A. glucose in concentrated solution is isotonic to the extracellular fluid B. a great increase in the amount of
plasma increases the rate of formation of urine C. the amount of glucose in the urine increases if the glucose
content of the diet or blood increases D. urine discharge is naturally intermittent rather than continuous
E. glucose affects osmosis, one of the mechanisms involved in the formation of urine
8. A bus driving through the desert in Arizona breaks down. After walking three hours in the hot sun, which
person(s) described below makes (make) the appropriate choice(s) to restore body fluid volume?
I. reabsorbing more water
II. drinking a quantity of alcoholic beverage
III. excreting more salt to make water more isotonic
IV. reabsorbing more salt so that water follows
A. I only B. I and IV only C. II and III only D. I, II and III only E. I, II and IV only
Composition (g/100 mL)
Component
I
Urea
Plasma
0.030
Filtrate
0.030
Urine
2.00
II
Uric acid
0.004
0.004
0.05
III
IV
Glucose
Amino acids
0.100
0.050
0.100
0.050
0.00
0.00
V
Salts
0.720
0.720
1.50
VI
Proteins
8.000
0.036
0.00
9. A patient's test results are shown in the table above. According to the table above, which items are completely
reabsorbed into the plasma?
A. I, II, V B. III, V, VI C. I, III, IV D. III, IV, VI E. II, IV, V
10. A patient's test results are shown in the table above. According to the above table, which items are excreted?
A. I, II, V B. III, V, VI C. I, III, IV D. III, IV, VI E. II, IV, V
11. In an hypothetical experiment, human subjects were placed in a room, the temperature of which was higher than
body temperature (37 degrees Celsius). At the same time, blood, cooler than 37 degrees Celsius, was infused into
the subjects. Choose the correct effect of this experiment on the subjects.
A. skin blood vessels dilate B. no effect is noticed by the subject C. perspiration evaporates from the skin
D. subjects begin to shiver and hair elevates E. subject removes clothing
12. A family doctor has a patient with the following symptoms: very high blood sugar levels; high sugar level in the
urine; is very thirsty; produces large quantities of urine. Which condition should the doctor investigate?
A. diabetes insipidus B. Bright's disease C. diabetes mellitus D. kidney stones E. goiter
13. When the ambient (room) temperature is very high (i.e., 105 degrees Fahrenheit), the body will lose heat by
A. radiation B. conduction C. evaporation D. increased metabolism E. none of the above
14. The term used to describe the ability of a living organism to adjust to changing environmental conditions by
regulating their internal processes is
A. regulation B. homeostasis C. inhibition D. feedback E. metabolism
15.
enzyme m
enzyme n
In the metabolic pathway M---------------> N---------------->P, enzyme m can bind to its
substrate M and also to P. The binding of P to enzyme m leads to
A. precursor activation B. competitive inhibition C. substrate activation D. feedback inhibition E. positive
inhibition
16. Which of the following statements is true of brown fat?
A. it produces heat without producing ATP B. it insulates animals used to cold C. it is a major source of heat
production for pigs D. it is only found in bears E. it provides fuel for muscle cells responsible for shivering
17. Which of the following would cause a decrease in the hypothalamic temperature set point for metabolic heat
production?
A. going into a chilly environment B. taking Aspirin when you have a fever C. waking up from hibernation
D. getting an infection that causes a fever E. cooling the hypothalamus
18. Which of the following substances causes nitrogen to be released as ammonia?
A. alpha ketoglutarate B. glutamic acid C. urea D. uric acid
19. The nitrogen that must be excreted comes from
A. the metabolic breakdown of carbohydrates B. the nitric buffer system C. the deamination of proteins
D. the atmosphere
20. The sodium pump operates in this part of the nephron:
A. Bowman's capsule B. collecting tubule C. proximal convoluted tubule D. Loop of Henle
21. Which of the following analogies would best fit the action of the kidney?
A. selecting those items not useful and excreting them B. removing all the items and returning 10% of them
C. removing all the items and returning none of them D. removing all the items and returning what is still
useful
22. Which one of the following is a part of the circulatory system?
A. distal tubules B. Bowman's capsule C. collecting duct D. glomerulus
23. The collecting ducts in the kidney
A. can actively transport water molecules actively into the urine B. are responsible for most of the reabsorption
of water that occurs in the kidney C. determine to a large extent the final osmolality of urine D. are rendered
impermeable to water by aldosterone
24. The main active transport mechanism in the kidney is the
A. sodium pump B. filtration process C. calcium pump D. osmotic pressure
25. Which one of the following is not associated with the movement of the other three in kidney functions?
A. potassium ions B. hydrogen ions C. water D. protein
26. When sodium ions are pumped from the glomerular filtrate to the interstitial fluid of the Bowman's capsule
A. the osmotic pressure of the interstitial fluid increases B. chloride ions move from the interstitial fluid back
into the nephron C. water moves back into the nephron D. potassium ions are pumped into the nephron from
the interstitial fluid
27. Glomerular filtrate is identical to plasma, except in respect to
A. pH B. glucose content C. amounts of red and white blood cells D. formed-element and protein content
28. Choose the item below controlled by ADH:
A. the level of glucose in the blood B. the amount of water re-absorbed in the nephron C. the development of
the lining of the uterus D. the release of an ovum from the ovary E. the uptake of calcium by the bones
29. Aldosterone causes excessive salt reabsorption in the
A. proximal tubules B. distal tubules C. Loops of Henle D. efferent arterioles
30. Antidiuretic hormone is secreted by the
A. thyroid B. adrenal glands C. pituitary gland D. hypothalamus
31. Excess hydrogen ions H+ are removed by
A. distal tubules after reaction with glucose B. distal tubules after reaction with urea C. aldosterone's reaction
with it in the nephron D. the lungs after reaction with bicarbonate ions E. Loop of Henle after reaction with
ADH
32. Insufficiency of ADH is the condition called
A. diabetes mellitus B. diabetes insipidus C. Bright's disease D. none of the above
33. Kidney stones are the result of
A. precipitation of mineral solutes from the blood B. precipitation of glucose from the blood C. too much uric
acid D. solidified urea
Mr. X
urine produced / day: 1.5 L
sweating: normal
thirst: normal
Mr. Y
urine produced / day: 13 L
sweating: above normal
thirst: intense
Mr. Z
urine produced / day: very low
sweating:nonexisting
thirst: nil
34. Three individuals are under observation for a period of 10 days. Below is the medical assessment for each
patient.
In referring to the information listed in the above table, identify the person(s) who are suffering from
hyposecretion of the pituitary gland.
A. Mr. X B. Mr. Y C. Mr. Z D. Mr. Y and Mr. Z
35. Identify the person in the above table who is suffering from hypersecretion of pituitary gland.
A. Mr. X B. Mr. Y C. Mr. Z D. Mr. Y and Mr. Z
36. A doctor has a patient who is hypoglycemic. The most likely cause is low activity in which of these endocrine
cells?
A. parathyroids B. thyroid C. alpha cells D. beta cells
37. A patient exhibits the following symptoms: high phosphate content in the urine, prone to bone fractures by minor
accidents, and tender areas around the kidney due to stones. The doctor's assessment involves problems with
which of these hormone?
A. PTH B. cortisol C. ADH D. thyroxine
38. A person who has experienced a considerable loss of mass, has a low blood calcium level, has protruding eyes, is
easily agitated, and always feels cold is likely suffering from which of the following?
A. diabetes insipidus B. diabetes mellitus C. a hyperactive thyroid D. a hyperactive parathyroid E. an
adrenal tumor
39. In the graph below, the patient is most likely suffering hyposecretion of which of the following?
A. cortisol B. epinephrine C. mineralocorticoids D. calcitonin
40. Which of the graphs above illustrate someone with diabetes?
A. III B. I C. IV D. II and IV
41. Which graph illustrates a person who may secrete too little glucagon?
A. III B. I C. IV D. II and IV
42. Which graph illustrates a person with a healthy pancreas?
A. III B. I C. IV D. II and IV
43. Which of the following statements about hormones is incorrect?
A. they are produced by glands such as the thyroid B. they travel to different areas of the body C. they are
carried by the blood D. they are used to communicate between different individuals E. they elicit specific
biological responses from target cells
44. The hypothalmus controls the anterior pituitary with which of the following?
A. releasing factors B. thalmus messenger C. third messengers D. antibodies E. pyrogens
45. Steroid hormones exert their effect by
A. interacting with receptors on cell membranes B. a direct effect in the nucleus of a cell C. initiating
formation of cyclic AMP D. initiating formation of cyclic GMP
46. The graph below compares the rate absorption of glucose in the small intestine when thyroxine in the blood is
either high (solid line) or low (broken line). The Y axis represents percent glucose absorbed, and the X axis
indicates time.
The graph shows that glucose absorption
A. occurs more rapidly when there is a low level of thyroxine in the blood B. occurs more slowly when there is
a high level of thyroxine in the blood C. occurs more rapidly when there is a high level of thyroxine in the
blood D. is independent of thyroxine level in the blood
47. These graphs show concentrations of three hormones, as well as the thickness of the uterine wall (Y axis), vs the
time in days (X axis).
In this cycle, the release of the egg occurs
A. 14th day B. on the 28th day C. between the 16th and the 26th day D. between the 12th and the 16th day
48. Which of the following endocrine glands is a direct extension of the nervous system?
A. anterior pituitary gland B. posterior pituitary gland C. thyroid gland D. thymus gland E. adrenal cortex
49. In times of stress, the adrenal gland promotes the synthesis of glucose from noncarbohydrate substrates by
secreting which of the following hormone?
A. glucagon B. glucocorticoids C. epinephrin D. thyroxine E. ACTH
50. The adrenal medulla secretes which of the following?
A. acetylcholine B. cortisol C. epinephrine D. cortisone
51. An iodine-deficient goiter secretes more of which of the following hormone?
A. TSH B. T3 C. thyroxine D. all of the above
52. Metabolic homeostasis concerns the thyroid gland. The thyroid is regulated by feedback loops involving which
of the following?
A. the pituitary gland and two hormones B. the hypothalamus, pancreas, and four hormones C. the
hypothalamus, the pituitary, and three hormones D. the Islets of Langerhans and three hormones E. the adrenal
cortex and three hormones
53. During an allergic response to a bee sting or pollen, which of the following hormone is often released?
A. GH B. thyroxine C. prostaglandin D. PTH
54. If the thyroid gland malfunctioned and failed to secrete sufficient thyroxine, you would expect to find an
abnormally
A. small pituitary gland B. high rate of metabolism in the patient C. low concentration of thyrotropic hormone
(TSH) in the patient's bloodstream D. high concentration of TSH in the bloodstream
55. In times of stress, the hormone cortisol directly or indirectly affects all but one of the following?
A. brain B. adrenal gland C. liver D. muscles
56. In an emergency situation
A. digestions of sugars is accelerated B. glycogen is converted to glucose C. glucose is converted to glycogen
D. endocrine suppression of glucose metabolism is experienced
57. Adrenaline affects the flow of blood by which of the following?
A. stimulating the blood cells B. stimulating the muscle of the heart C. increasing the amount of blood in the
system D. causing the veins and arteries to constrict
58. Long term stress often results in higher blood sugar levels. This may result in all but one of the following
complications:
A. lower clacium levels in the bones B. increased urine volume C. increased blood pressure D. increased
susceptibility to type II diabetes
59. Small concentrations of hormone are needed to cause an effect on target cells. This occurs because
A. hormones are fat soluble and easily penetrate the membranes of the nucleus B. hormones are huge molecules
that remain active for years and can repeatedly stimulate the same cell C. the mechanism of hormonal action
involves an enzyme cascade that amplifies the response to a hormone D. the mechanism of hormonal action
involves the rapid replication of the hormone within the target cell to quickly magnify the hormone's effect
E. the mechanism of hormonal actin involves memory cells that have had prior contact with the hormone, and
immediately respond to its presence
60. Anabolic steroids taken by an athlete will often cause which of the following?
A. facial hair growth in females B. swollen feet and ankles C. breast development in males D. all of the
above
61. A marksman who wants to improve his rifle arm could abuse which of the following?
A. beta blockers B. growth hormone C. caffeine D. amphetamines
62. A positive feedback mechanism regulates which of the following hormone?
A. thyroxine B. oxytoxin C. insulin D. TSH
63. Progesterone is produced primarily in which of the following?
A. adrenal cortex B. anterior pituitary C. corpus luteum D. developing follicle E. placenta
64. During the female reproductive cycle, LH peaks when which one of these occurs?
A. pregnancy occurs B. menstruation occurs C. fertilization occurs D. ovulation occurs E. implantation
occurs
65. At puberty, which one of the following occurs?
A. the hypothalamus begins secreting GnRH B. the anterior pituitary gland stops secreting LH C. FSH
secretion declines D. the level of sex hormones in both sexes declines E. females no longer produce mature
follicles
66. Menstruation starts by which one of the following?
A. sudden release of FSH from the pituitary B. lack of estrogen and progesterone due to degeneration of the
corpus luteum C. sudden drop in LH D. increased release of estrogen and progesterone from the corpus
luteum
67. The growing follicle secretes which of the following hormone?
A. LH B. testosterone C. GnRH D. estrogen E. FSH
68. Testosterone production occurs in the which of the following?
A. sperm cells B. seminiferous tubules C. interstitial cells D. anterior pituitary E. hypothalamus
69. Through the middle ear cavity, the transmission of sound wave vibrations
A. decreases the sound wave pressure received at the tympanum B. decreases the frequency of vibrations C. is
retarded by the three small bones D. amplifies the vibrations received at the tympanum
70. To an isolated neuron, two stimuli, the first of one millivolt and the second of ten millivolts, were applied in
quick succession. Action potentials of the neuron were recorded. Which of the below graphs has the correct
pattern?
A. I B. II C. III D. IV E. V
71. The relationship between the strength of the stimulus to an isolated neuron and the maximum height of the action
potential that is caused by the stimulus is best shown by which of the following graph?
A. I B. II C. III D. IV E. V
72. The coordination of motor activities in mammals is carried out by which of the following?
A. pons B. cerebellum C. cerebrum D. medulla E. hypothalamus
73. Exocytosis is used by the synaptic vesicles to remove their contents at which of the following?
A. dendrite B. axon hillock C. nodes of Ranvier D. postsynaptic membrane E. presynaptic membrane
74. Given the steps shown below, which is the correct sequence for transmission at a chemical synapse?
I. neurotransmitter binds with receptor
II. calcium ions rush into neuron's cytoplasm
III. action potential depolarizes the presynaptic membrane
IV. ion gate opens to allow particular ion to enter cell
V. synaptic vesicles release neurotransmitter into the synaptic cleft
A. I, II, III, IV and V B. II, III, V, IV and I C. III, II, V, I and IV D. IV, III, I, II and V E. V, I, II, IV and III
75. People are not constantly aware of what they are wearing. This is called
A. sensory adaptation B. fovea accommodation C. rhodopsin bleaching D. motor unit recruitment
E. receptor amplification
76. Focusing the eye is achieved by changing the shape of the lens. This is called
A. zooming B. refraction C. conditioning D. habituation E. accommodation
77. An action potential’s rate of propagation depends on which of the following?
A. whether or not the axon is myelinated B. the axon's diameter C. whether or not the axon is insulated by
glial cells D. the cross-sectional area of the axon E. all of the above
78. Endorphins do which of the following?
A. are released in response to stress and pain B. are naturally produced in the central nervous system C. are
chemically similar to drugs called opiates D. produce a pleasant feeling and block pain impulses E. all of the
above
79. The autonomic division of the nervous system
A. is involved in conscious thought B. is involved in learning C. controls unconscious life-sustaining activities
D. controls voluntary muscles E. all of the above
80. A patient with symptoms of tremors, an irregular walk,and halting speech might have experienced trauma to
which of the following?
A. cerebrum B. pons C. cerebellum D. thalamus E. hypothalamus
81. Respiration is controlled by which of the following?
A. pons, hypothalamus B. cerebrum, hypothalamus C. pons, medulla oblongata D. hypothalamus, pituitary
gland
82. The act of blushing when embarrassed is controlled by which of the following?
A. the autonomic nervous system B. the cerebrum C. the peripheral nervous system D. pores in the skin
E. the cerebellum
83. When the neuron generates an action potential, the potassium ions are which of the following?
A. in greater amounts outside the neuron than inside B. in greater amounts inside the neuron than outside
C. not present outside D. not present inside E. in equal amounts inside and outside
84. Synapses perform the following functions:
I. speed the flow of impulses through networks of neurons
II. filter out random impulses from neural circuits
III. impose a one-way flow of information on neural networks
IV. facilitate a neural pathway
V. inhibit a neuron
Choose your response from the following:
A. II, III, IV, V only B. I, III, V only C. II, IV, V only D. I, II, III, IV, V E. IV and V only
85. Parasympathetic stimulation would result in which of the following?
A. decreased blood flow in skin B. pupil dilation C. increased heart rate D. decreased activity of digestive
tract
86. What directly causes vibrations of the basilar membrane of the organ of Corti?
A. vibrations in the cochlear fluid B. vibrations in the tectorial membrane C. vibrations in the malleus, incus
and stapes D. vibrations in the oval window
87. The transmission of sound wave vibrations through the middle ear cavity does which of the following?
A. decreases the sound wave pressure received at the tympanum B. decreases the frequency of vibrations C. is
retarded by the three small bones D. amplifies the vibrations received at the tympanum
88. The proper relationship between the organ of Corti and the tympanic and vestibular canals is best described by
which of the following?
A. the vestibular canal lies between the canal containing the organ of Corti and the tympanic canal B. the
tympanic canal lies between the vestibular canal and the canal containing the organ of Corti C. the organ of
Corti lies in a canal located between the tympanic and vestibular canals D. the organ of Corti lies within the
tympanic canal, which is continuous with the vestibular canal
89. Light is not refracted by which of the following?
A. pupil B. lens C. cornea D. vitreous humor
90. When an image is focused in front of the retina and the eyeball is too long, the condition is termed
A. presbyopia B. hyperopia C. myopia D. astigmatism
91. Irregularities in the cornea leading to visual distortion is called which of the following?
A. astigmatism B. hyperopia C. myopia D. accommodation E. presbyopia
92. Fine motor movement is controlled by which part of the brain?
A. meninges B. corpus callosum C. pons D. cerebrum
93. Vision difficulties are associated with which lobe of the brain?
A. frontal B. temporal C. parietal D. occipital
94. Natural nervous system function is not impaired by which of the following?
A. endorphins B. acetylcholine C. opiates D. enkephalins
95. The ear can protect itself from intense sound by which of the following?
A. restricting movement of cochlear fluid B. pulling the stapes from the oval window C. stopping movements
of hair cells in organ of Corti D. scattering vibrations into semicircular canals
96. When doing loops on a roller coaster, dizziness results from which of the following?
A. rapid movement of otoliths B. breakage of hair cells in superior canal C. cilia moving upwards in canals
D. sagging of gelatinous material
97. Damage to which of these types of nerves is usually permanent?
A. myelinated nerve cells B. grey matter C. white matter D. peripheral nerves
98. Which part of the neuron receives sensory information?
A. dendrite B. sheath C. axon D. node of Ranvier
99. Interneurons are most commonly located in which of the following?
A. sensory nerves B. central nervous system C. sympathetic nervous system D. peripheral nervous system
100. Which of the following is not an effector?
A. muscles B. organs C. glands D. brain
101. Integration of simple responses to certain stimuli, such as the knee jerk response, is accomplished by which of
the following?
A. spinal cord B. hypothalamus C. corpus callosum D. cerebellum E. medulla
Completion
Complete each statement.
102. As the environment changes, our bodies use the nervous and endocrine systems to compensate by a mechanism
called ___________________.
103. _______________________________ is used to describe fluctuations in body temperature.
104. Temperature fluctuations are controlled by the ____________________.
105. Cells are destroyed by ____________________ as they freeze.
106. If a person has lost a lot of water, the kidneys will produce a more ____________________ urine.
107. ____________________ involves the transfer of essential solutes and water from the nephron back into the
blood.
108. Changes in osmotic pressure of the blood are determined by ____________________ in the hypothalamus.
109. Blood vessel constriction and the release of aldosterone are controlled by the activated enzyme
____________________.
110. Hormones attach to specific cells by their ____________________.
111. ____________________ hormones attach to receptors within the cytoplasm.
112. ____________________ hormones attach to receptors on the cell membrane.
113. ____________________ is a condition where blood sugar level rises because of inadequate production of insulin
after meals.
114. The adrenal cortex produces a glucocorticoid called ____________________ that helps the body recover from
stress.
115. Without proper amounts of iodine in the diet, the thyroid is continually stimulated by TSH, producing a
____________________.
116. ______________________________ have muscle-building traits. They are used by weight lifters because of
these traits.
117. Males maintain low levels of female hormones by ____________________ them at accelerated rates.
118. The ____________________ is made of the nerves in the brain and spinal chord and coordinates information
from sensory neurons.
119. The areas between the myelin sheath on the axon that allow ions to pass are called the
_________________________.
120. When a nerve cell is excited, sodium ions rush into the cell, changing its charge. This is referred to as
____________________.
121. _________________________ is the intensity a stimulus must be to produce a response.
122. The blood brain barrier, composed of three membranes, determines which chemicals will reach the brain. It is
known as the ____________________.
123. The lens of a person's eye becomes thinner as the person watches a train leave. This is an example of
_________________________.
124. Excessive noise can damage the ear. The muscles in the bones of the ____________________ act to protect the
more delicate parts of the ear.
125. Balance is maintained by the bending of ___________________ that initiate a nerve impulse.
Matching
Match each item with the correct statement below.
A. ectotherm
D. deamination
B. positive feedback
E. glomerulus
C. reabsorption
____ 126. nutrients move from renal tubules to blood vessels
____ 127. increases in intensity of response to stimulus
____ 128. removal of amino group from amino acid
____ 129. depend on air temperature to regulate body
____ 130. capillary bed which filters the blood
Match each item with the correct statement below.
A. growth hormone
D. thyroxine
B. insulin
E. testosterone
C. epinephrine
____ 131. stimulates the development of sperm
____ 132. increases the absorption of glucose by cells
____ 133. regulates the metabolism
____ 134. regulates the development of long bones
____ 135. produced in times of stress
Match each item with the correct statement below.
A. axon
D. schwann cells
B. dendrites
E. synapses
C. myelin sheath
____ 136. special glial cells
____ 137. receive information from sensory receptors or nerve cells
____ 138. extension of the cytoplasm of a nerve cell
____ 139. acts as an insulator for the neuron
____ 140. small spaces between neurons
homeostasis
Answer Section
MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
B
D
C
B
B
E
E
B
D
A
B
C
C
B
D
B
B
B
C
C
D
D
C
A
B
A
C
B
B
C
D
B
A
B
C
D
A
C
C
B
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
71.
72.
73.
74.
75.
76.
77.
78.
79.
80.
81.
82.
83.
84.
85.
86.
87.
C
A
D
A
B
C
A
B
B
C
A
C
C
D
A
B
B
B
C
D
A
B
C
D
A
B
D
C
D
C
B
B
E
C
A
E
E
E
C
C
C
A
B
A
A
A
D
88.
89.
90.
91.
92.
93.
94.
95.
96.
97.
98.
99.
100.
101.
C
A
C
A
D
D
B
B
A
B
A
B
D
A
COMPLETION
102.
103.
104.
105.
106.
107.
108.
109.
110.
111.
112.
113.
114.
115.
116.
117.
118.
119.
120.
121.
122.
123.
124.
125.
homeostasis
Dynamic equilibrium
hypothalamus
ice crystals
concentrated
Reabsorption
osmoreceptors
angiotensin
receptors
Steroid
Protein
Hyperglycemia
cortisol
goiter
Anabolic steroids
excreting
CNS
nodes of Ranvier
depolarization
Threshold level
meninges
accommodation
middle ear
cilia
MATCHING
126. C
127. B
128. D
129. A
130. E
131.
132.
133.
134.
135.
E
B
D
A
C
136.
137.
138.
139.
140.
D
B
A
C
E