Homeostasis
Test Review
Part A: True and False
Contractions that increase in strength
during pregnancy are an example of
a negative feedback mechanism.
A. True
B. False
Contractions that increase in strength
during pregnancy are an example of
a negative feedback mechanism.
A. True
B. False – positive feedback
Some animals sun themselves or
retreat to shade as a way of
regulating their body temperature.
A. True
B. False
Some animals sun themselves or
retreat to shade as a way of
regulating their body temperature.
A. True
B. False
A cross section of the kidney shows an
outer layer called the medulla, an inner
layer called the cortex, and a hollow
chamber called the renal pelvis.
A. True
B. False
A cross section of the kidney shows an
outer layer called the medulla, an inner
layer called the cortex, and a hollow
chamber called the renal pelvis.
A. True
B. False
- outer layer: cortex
- inner layer: medulla
Plasma proteins, erythrocytes, and
platelets are transferred to the
Bowman's capsule.
A. True
B. False
Plasma proteins, erythrocytes, and
platelets are transferred to the
Bowman's capsule.
A. True
B. False
When a person sweats and does not
drink water, the pituitary gland
releases ADH.
A. True
B. False
When a person sweats and does not
drink water, the pituitary gland
releases ADH.
A. True
B. False
Information from your brain is moved
to your leg muscles by motor neurons.
A. True
B. False
Information from your brain is moved
to your leg muscles by motor neurons.
A. True
B. False
Myelin sheath is very important
for the transferring of information
along the medulla.
A. True
B. False
Myelin sheath is very important
for the transferring of information
along the medulla.
A. True
B. False - axon
Electrochemical messages are
carried by the movement of ions
through the nerve membrane.
A. True
B. False
Electrochemical messages are
carried by the movement of ions
through the nerve membrane.
A. True
B. False
When the nerve cell is excited, it
becomes more permeable to
potassium ions than sodium ions.
A. True
B. False
When the nerve cell is excited, it
becomes more permeable to
potassium ions than sodium ions.
A. True
B. False - sodium
If a foreign bacteria enters the
skin, the first leukocyte it will meet
will be a macrophage.
A. True
B. False
If a foreign bacteria enters the
skin, the first leukocyte it will meet
will be a macrophage.
A. True
B. False
An antibody that attacks the HIV virus
will also attack other viruses.
A. True
B. False
An antibody that attacks the HIV virus
will also attack other viruses.
A. True
B. False
Part B: Multiple Choice
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
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
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
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
Which one of the following is a part of
the circulatory system?
a.
b.
c.
d.
distal tubules
collecting duct
Bowman's capsule
glomerulus
Which one of the following is a part of
the circulatory system?
a.
b.
c.
d.
distal tubules
collecting duct
Bowman's capsule
glomerulus
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
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
Antidiuretic hormone is secreted by
the
a. Thyroid
b. pituitary gland
c. adrenal glands
d. hypothalamus
Antidiuretic hormone is secreted by
the
a. Thyroid
b. pituitary gland
c. adrenal glands
d. hypothalamus
The coordination of motor activities
in mammals is carried out by which
of the following?
a. Pons
b. Medulla
c. Cerebellum
d. Hypothalamus
e. cerebrum
The coordination of motor activities
in mammals is carried out by which
of the following?
a. Pons
b. Medulla
c. Cerebellum
d. Hypothalamus
e. cerebrum
Focusing the eye is achieved by
changing the shape of the lens. This is
called
a. Zooming
b. Habituation
c. Refraction
d. Accommodation
e. conditioning
Focusing the eye is achieved by
changing the shape of the lens. This is
called
a. Zooming
b. Habituation
c. Refraction
d. Accommodation
e. conditioning
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
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
A patient with symptoms of tremors,
an irregular walk, and halting speech
might have experienced trauma to
which of the following?
a.
b.
c.
cerebrum
pons
cerebellum
d.
e.
thalamus
hypothalamus
A patient with symptoms of tremors,
an irregular walk, and halting speech
might have experienced trauma to
which of the following?
a.
b.
c.
cerebrum
d.
pons
e.
cerebellum
thalamus
hypothalamus
Respiration is controlled by which of
the following?
a. pons, hypothalamus
b. pons, medulla oblongata
c. cerebrum, hypothalamus
d. hypothalamus, pituitary gland
Respiration is controlled by which of
the following?
a. pons, hypothalamus
b. pons, medulla oblongata
c. cerebrum, hypothalamus
d. hypothalamus, pituitary gland
The act of blushing when
embarrassed is controlled by which
of the following?
a. the autonomic nervous system
b. pores in the skin
c. the cerebrum
d. the cerebellum
e. the peripheral nervous system
The act of blushing when
embarrassed is controlled by which
of the following?
a. the autonomic nervous system
b. pores in the skin
c. the cerebrum
d. the cerebellum
e. the peripheral nervous system
Parasympathetic stimulation would
result in which of the following?
a. decreased blood flow in skin
b. increased heart rate
c. pupil dilation
d. increased activity of digestive
tract
Parasympathetic stimulation would
result in which of the following?
a. decreased blood flow in skin
b. increased heart rate
c. pupil dilation
d. increased activity of digestive
tract
Vision difficulties are associated
with which lobe of the brain?
a. Frontal
b. Parietal
c. Temporal
d. occipital
Vision difficulties are associated
with which lobe of the brain?
a. Frontal
b. Parietal
c. Temporal
d. occipital
Which part of the neuron receives
sensory information?
a. Dendrite
b. Axon
c. Sheath
d. node of Ranvier
Which part of the neuron receives
sensory information?
a. Dendrite
b. Axon
c. Sheath
d. node of Ranvier
Which of the following is not an
effector?
a. Muscles
b. glands
c. Organs
d. brain
Which of the following is not an
effector?
a. Muscles
b. glands
c. Organs
d. brain
There is no vaccine available to
prevent the common cold because
a. common cold viruses do not
stimulate production of antibodies
b. there are too many types of
common cold viruses
c. common cold viruses grow best at
33°C instead of 37°C
d. the common cold seldom causes
absence from work and school
There is no vaccine available to
prevent the common cold because
a. common cold viruses do not
stimulate production of antibodies
b. there are too many types of
common cold viruses
c. common cold viruses grow best at
33°C instead of 37°C
d. the common cold seldom causes
absence from work and school
T cells become mature in which of
the following?
a. bone marrow
b. spleen
c. thyroid gland
d. lymph node
e. thymus gland
T cells become mature in which of
the following?
a. bone marrow
b. spleen
c. thyroid gland
d. lymph node
e. thymus gland
Part C: Short Answer
1.Describe how negative feedback is
preferable to positive feedback in
most situations.
- positive feedback will increase the
response
- disadvantage if stimulus is harmful
- negative feedback reduces the
response when balance is achieved
What conditions or substances must
remain constant in the body?
1. Body temperature
2. pH
3. Water levels
4. Oxygen/carbon dioxide levels
5. Nutrient levels
6. Electrolytes (dissolved ions)
7. Wastes, toxins
List the three stages of urine
formation.
1. Glomerular filtration
2. Active recovery/reabsorption
3. Water recovery/secretion of
wastes
Describe the role of insulin and
glucagon in regulating blood
sugar.
Insulin – lowers blood sugar
Glucagon – raises blood sugar
List three non-specific defences
of the body.
1. Skin
2. Body secretions
3. Normal bacteria
4. White blood cells