PHYSIOLOGY 1
PRACTICE EXAM QUESTIONS WITH
CORRECT DETAILED ANSWERS |
ALREADY GRADED A+<RECENT
VERSION>
1. Which of the following components of the bone matrix, when removed,
allows the bone to be easily shattered?
Select one:
a. cartilage
b. collagen
c. hydroxyapatite
d. mineral - answer b. collagen
2. Which of the following is the most widely distributed type of muscle in
the body?
Select one:
a. cardiac
b. postural
c. skeletal
d. smooth - answer d. smooth
3. Which sentence best describes the sliding filament model of muscle
contraction?
Select one:
a. Actin and myosin filaments remain stationary.
b. Actin and myosin myofilaments shorten.
c. Sarcomeres and myofibrils contract.
, d. Sarcomeres and myofibrils lengthen. - answer c. Sarcomeres
and myofibrils contract.
4. doctor performing an autopsy on a patient concludes that part of the brain
was likely damaged by trauma due to a large population of which type of
cell?
Select one:
a. Schwann cells
b. microglia
c. oligodendrocytes
d. ependymal cel - answer b. microglia
5. What type of axons is found in a gray ramus comunicans?
Select one:
a. myelinated, pre-ganglionic axons
b. myelinated, post-ganglionic axons
c. unmyelinated, pre-ganglionic axons
d. unmyelinated, post-ganglionic axons - answer d. unmyelinated,
post-ganglionic axons
6. Which class of chemical messengers is secreted by neurons into synaptic
clefts to activate an adjacent cell?
Select one:
a. autocrine
b. endocrine
c. neurotransmitter
d. paracrine - answer c. neurotransmitter
7. The targeted response of the hormone lipotropin is an increase in which
of the following?
Select one:
a. the breakdown of fat in adipose tissues
b. the breakdown of lipids and release of fatty acids from cells
c. the production of milk in lactating women
, d. the secretion of thyroid hormone - answer a. the breakdown of
fat in adipose tissues
8. The articulations between the radius and ulna that allow for rotation of
the forearm is an example of a(n) _________ joint.
A. plane
B. pivot
C. hinge
D. ellipsoid - answer B. pivot
9. In order to increase low blood glucose levels back to normal, the pancreas
increases secretion of ________.
A. somatostatin
B. insulin
C. glucocorticoids
D. glucagon - answer D. glucagon
10.Hypocalcemia results from inactive
A. adrenal glands.
B. pancreatic islets.
C. parathyroid glands.
D. parafollicular cells. - answer C. parathyroid glands.
11.Which component of the autonomic nervous system is least active during
resting conditions?
A. parasympathetic division
B. enteric nervous system
C. sympathetic division
D. sensory neurons - answer C. sympathetic division
12.Which of the following special senses experiences the least amount of
decline as an individual ages?
A. olfactory
B. balance
, C. visual
D. auditory - answer A. olfactory
13.The study of the external form of the body and its relationship to deeper
structures is
Select one:
a. systemic anatomy.
b. regional anatomy.
c. molecular biology.
d. microbiology.
e. surface anatomy - answer e. surface anatomy
14.There are more microbial cells than human cells in your body and the
health of this microbiota clearly influences human well-being. How many
microbes are there?.
Select one:
a. For every cell in your body, there are ten microbial cells.
b. For every cell in your body, there are one hundred microbial cells.
c. For every cell in your body, there are one thousand microbial cells.
d. For every cell in your body, there are ten thousand microbial cells.
- answer a. For every cell in your body, there are ten microbial
cells.
15.An anatomic image created from sound waves is a
Select one:
a. radiograph.
b. CT scan.
c. MRI.
d. sonogram - answer d. sonogram
16.A major limitation of radiographs is that they
Select one:
a. can only visualize bone.
b. give only a flat, two-dimensional image of the body.