1. A group of tissues that performs a specific function is a(n)
organ system
organism
tissue
organ
2. The outermost layer of the skin is the
hypodermis
subcutaneous layer
epidermis
dermis
3. All of the following are functions of the skin EXCEPT
protection
vitamin B synthesis
temperature regulation
sensation
4. The protein that helps protect the skin and underlying tissue is
melanin
melatonin
keratin
actin
5. The cells producing the pigment responsible for skin color are the
keratinocytes
melanocytes
adipocytes
Merkel cells
6. All of the following are accessory organs of the skin EXCEPT
hair
nails
pain receptors
sweat glands
7. The bundle of smooth muscles associated with hair follicles is called
orbicularis muscle
sebaceous bundle
arrector pili
none of the above
8. Sweat/perspiration is the substance produced by
ceruminous glands
Eccrine glands
holocrine glands
sebaceous glands
9. A burn that involves the entire epidermis and some of the dermis is a
first-degree burn
second-degree burn
third-degree burn
fourth-degree burn
10. The most common form of skin cancer is
basal cell carcinoma squamous cell carcinoma
malignant melanoma
granular cell carcinoma
11. The function of this protein is to protect against ultra violet rays
Keratin
Melanin
Insulin
Collagen
12. The function of the skin include
Defense against the microbes
Regulating electrolyte (salt) balance
Regulating water balance
all of the above
13. The most superficial layer of the epidermis is the
Stratum granulosum
stratum spinosum
stratum germinativum
startum corneum
14. The two layers of the skin are the
hair and skin
dermis and epidermis
eleidin and keratin
cutaneous membrane and accessory structures
15. Which epidermal layer is found in thick skin?
Stratum germinativum
granulosum
Stratum lucidum
Stratum corneum
Stratum
16. The secretion that lubricates and inhibits growth of bacteria on the skin is called
Lymph
Serum
Sweat
Sebum
17. Layers of the epidermis beginning with the deepest layer and proceeding outwars, including the
strata:
spinosum, germinativum, corneum, granulosum
corneum, granulosum, spinosum, germinativum
germinativum, spinosum, granulosum, corneum
granulosum, spinosum, germinativum, corneum
18.The layers of the epidermis where mitotic divisions occur are:
germinativum and spinosum
corneum and germinativum
spinosum and corneum
mitosis occurs in all layers
19. Special smooth muscles in the dermis that, when contracted produce “goose bumps” are called:
arrector pili
root sheaths
cuticular papillae
tissue papillae
20. Hair production occurs in the
stratum germinativum of the epidermis
layers of the dermis
Hypodermis
reticular layers of the dermis
papillary
21. Which of the following statements describes the immediate response by the skin to an injury?
Fibroblast in the dermis create scar tissue
a scab forms
the epidermal cells are replaced
Bleeding occurs and mast cells trigger an inflammatory response
22. Sagging and wrinkling of the skin occurs from
deactivation of sweat glands
a decrease in the Vitamin D production
decrease in the collagen network of the dermis
the decline of the germinative cell activity
23. The core of a hair is called the:
cuticle
cortex
connective tissue sheath
25. The largest organ is the human body is
skin
brain
heart
muscle
26. The specialized cells of the nervous system are:
a) neurotransmitters b) axons
c) neurons
d) dendrites
follicle
a
27. The central nervous system consists of:
a) reflexes
b) brain & spinal cord c) sensory neurons
d) the mind
28. The difference between white and grey matter in the nervous system is:
a.) presence or absence of myelin b) dead cells
c.) material without cells
d.) more and less neurotransmitter
29. The balance of these ions regulates action potentials in a neuron:
a) Calcium & chloride
b) Sodium & calcium
c) Sodium & potassium
d) all of the above are true
30. The part of the neuron that receives signals:
a) vesicles
b) axons
c) neurons
d) dendrites
31. When an action potential reaches the end of a neuron it triggers the release of?
a) dendrites
b) neurotransmitters
c) K+ & Na+ ions
d) all of the above are true
32. What begins when a neuron is triggered by another neuron:
a) an action potential
b) cell division
c) return to resting potential d) all of the above
33. The part of the brain responsible for thoughts and sense perception:
a) cerebrum b) hypothalamus
c) brainstem d) cerebellum
34. The part of the brain responsible for coordinating homeostasis:
a) cerebrum b) hypothalamus
c) brainstem d) cerebellum
35. The part of the brain responsible for coordinating breathing and heart rates:
a) cerebrum b) hypothalamus
c) brainstem d) cerebellum
36. Neurons that conduct nerve impulses from the receptors to the central nervous system are
Motor neurons
efferent neurons
interneurons
sensory neurons
37. Processes/structures that carry nerve impulses away from the cell body are called
Dendrites
Axon
synapses
myelin sheaths
38. The different charge between the outside and the inside of a neuron at rest is called
action potential
synaptic potential
resting membrane potential
equilibrium potential
39. The stage in an action potential that immediately follows depolarization is
Polarization
repolarization
threshold
the resting period
40. The junction between two nerve cells is called
neuromuscular junction
neuroglandular junction
gap junction
41.Neurotransmittors are released at the
Dendrites
axon terminal
cell body
myelin sheath
synapse
42. In a reflex arc, a muscle or gland is considered to be the
receptor
integrating center
motor neuron
effector
43. All of the following are functions of the nervous system except that it
senses changes
analyzes changes
responses to changes
stores calcium
44. The neuroglia that produces myelin sheaths around axons in the peripheral nervous system are
schwann cell
oligodendrocytes
microglia
astrocytes
45. The pathway in the reflex arc that carries impulses towards the spinal cord is
Efferent pathway
afferent pathway
reticular pathway
none of the above
Open Response:

Diagram the parts of a synapse or the lobes of cerebral cortex. Label 6 parts

Draw and label a neuron. Compare the differences in the structure and function of dendrites and
axons in neurons

Identify 2 ways that different molecules/ions move into or out of a neuron and explain why they
would move at all? Explain with a diagram.

How are synaptic transmissions and nerve impulses related to each other? Illustrate each with a
diagram.

Identify two proteins associated with the skin. Describe the function these proteins, where and how
they do their jobs.

The skin is sensitive. Describe what this means and identify two specialized receptors found in the
skin.

The skin is involved in regulating body temperature. Describe two structures involved in maintaining
a stable body temperature.

A primary function of the skin is in protecting the rest of the body. Describe TWO ways the skin
protects the body and identify how it is structured to do so.

Illustrate with a diagram the reflex arc. Give two examples.