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Bio 130 - Anatomy & Physiology I
Test 3 practice questions
1.
Cells that break down the bone’s matrix to raise blood calcium levels are
called:
a. osteoclasts
d. osteoporosis
b. osteoblasts
e. osteoprogenitor cells
c. osteocytes
2.
What layer contributes to 2/3 of the of epidermis :
a. stratum corneum
d. dermis
b. stratum germinativum
e. subcutaneous
c. stratum lucidium
3.
Adipose cells are found in the:
a. papillary layer
d. epidermal layer
b. hypodermal layer
e. none of the above
c. reticular layer
4
A person that has 3rd degree burns over 30% of their body is considered to be in?
a. Stable condition
b. Critical condition
c. Damage is localized to the epidermis
d. Sensory reception is preserved
e. None of the above
5.
Schwann cells:
a.
are in PNS
b.
produce myelin
c.
wrap around individual sections of axons
d.
all of the above
e.
none of the above
6.
The protein responsible for waterproofing and resilience of the skin is:
a.
melanin
d. langerhan
b.
keratin
e. elastin
c.
collagen
7.
During an action potential the membrane first becomes more permeable to?
a.
sodium
d. potassium
b.
hydrogen
e. chloride
c.
calcium
8.
What kind of gland is most active during normal sweating?
a. merocrine
d. apocrine
b. Ceruminous
e. none of the above
c. Mammary glands
9.
When assessing a person’s skin a bluish tinge often on the lips might indicate
the person is:
a. not getting enough oxygen .
b. has broken blood vessels under the surface of the skin
c. is a response to cool the body off.
d. None of the above
e. All the above
10.
When assessing a mole you should look at:
a. asymmetry
b. border
c. diameter
d. color
e. all the above
11.
Skin is very red and sensitive to the touch were blisters have not formed is
classified s?
a. first degree
d. 4th degree
b. second degree
e. none of the above
c. third degree
12.
What bones are considered part of the axial skeleton?
a.
femur
b.
humerus
c.
skull
d.
iliac( hip)
e.
none of the above
13.
A vertebra would be considered a/an
a.
Irregular bone
b.
Short bone
c.
Long bone
d.
Flat bone
e.
None of the above.
14.
What type of cartilage is located in the intervertebral disc and meniscus of the
knee?
a.
Elastic
b.
Hyaline
c.
fibrocartilage
d.
none of the above
e.
all of the above
15.
If a persons blood calcium levels start to rise what cells will become active?
a.
Osteoblast
b.
Osteocyte
c.
Osteoclast
d.
Osteogenic
e.
None of the above
16.
What classification of joints allows for the greatest range of motion?
a.
synovial
b.
fibrous
c.
cartilaginous
d.
all provide equal motion
e.
none allow for motion
17.
The most important time to get calcium in your diet to develop strong bones is
between the years of:
a.
10-20
b.
15-25
c.
20-30
d.
30-40
e.
40-50
18.
What condition affects older people making their bones weaker and more
likely to fracture?
a.
osteoporosis
b.
osteomalacia
c.
osteosarcoma
d.
osteogenic
e.
osteoarthritis
19.
Which statement is true?
a.
Na is more concentrated outside of the neuron
b.
K is more concentrated outside of the neuron
c.
Na will move out of the cell by diffusion
d.
K will move into the cell by diffusion.
e.
None are true
20.
When an axon reaches threshold:
a. potassium ions rapidly enter the cell
b. permeability to both potassium and sodium ions decreases
c. initially sodium ions rapidly enter the cell
d. initially chloride ions leave the cell
e. ionic movement ceases
21. During its absolute refractory period, a membrane's sensitivity to stimulation is:
a.
insensitive
b.
hypersensitive
c.
normally sensitive
d.
very sensitive
22.
The space between two neurons is the:
a.
terminal button
d. acetylcholine
b.
interneuron
e. synaptic bulb
c.
synaptic cleft
23.
A bone that’s height is greater then width
is most likely a(n):
a. long bone
d. irregular bone
b. short bone
e. sesamoid bone
c. flat bone
24.
Saltatory conduction is:
a.
characteristic of myelinated neurons
b.
decreases speed of conduction
c.
increases speed of conduction
d.
a and b of the above
e.
a and c of the above
25.
Which of the following statements is true?
a. Schwann cells produce myelin in the CNS
b. Oligodendrocytes produce myelin in the CNS
c. Oligodendrocytes can myelinate only 1 fiber at a time
d. a schwann cell myelinate many fibers
e. none of the above are true
26 . A canaliculus of compact bone contains
A. nerves.
B. blood vessels.
C. an abundance of collagen fibers.
D. a process of an osteocyte.
E. mainly hydroxyapatite.
27. A fracture where the bone breaks through the skin is a
A. colles.
B. pott.
C. comminuted.
D. greenstick.
E. compound
28. Which of the following are not characteristic of graded potentials?
A. they are considered sub-threshold stimulus.
B. they are of variable voltage.
C. they are sometimes inhibitory.
D. they obey the all-or-none law.
E. they spread only short distances from the point of stimulation.
29. Nerve signals
A. travel fastest in small unmyelinated fibers.
B. travel fastest in large unmyelinated fibers.
C. travel fastest in small myelinated fibers.
D. travel fastest in large myelinated fibers.
E. travel at the same speed in all nerve fibers.
30. The fastest rate of mitosis is seen in
A. the stratum corneum.
B. the stratum lucidum.
C. the stratum granulosum.
D. the stratum spinosum.
E. the stratum basale
31. Which of the following is an epidermal cell functions as a macrophage?
A. a keratinocyte
B. a melanocyte
C. a plasma cell
D. a Langerhans cell
E. a Merkel cell
32. If a person has a disease that affects the Oligodendrocytes may:
A. have a problem with nerve conduction
B. can affect multiple neurons
C. will affect individual neurons
D. A and B
E. A and C
33. IPSP will result in the opening of:
A. Na gates
B. K gates
C Ca gates
D. Mg gates
E. all of the above
34. Multiple Sclerosis is a disease that primarily effects the brain and
spine cord. It is a demyelinating disease that damages nerve
conduction of many fibers. What cells does it primarily affect?
A. Oligodendrocytes
B. schwann cells
C. Neural Glia
D. Astrocytes
35. Glial cells are involved with?
A. Involved in providing nutrition to neurons
B. Maintaining the environment for neurons
C. Guide young neurons to the proper connections
D. a and b
E. all of the above.