Bio 250 Practice Exam 1
Fill in the letter of the BEST choice for each question on the computer
answer sheet. Use A = True and B = False.
1. A cut through the body that passes perpendicular to the long axis of the
body and divides the body into a superior and inferior section is known
as a
A. frontal section B. coronal section
C. transverse section D. sagittal section
E. parasagittal section
2. Glands that discharge an oily secretion into hair follicles are
A. ceruminous glands
B. apocrine sweat glands
C. merocrine (eccrine) sweat glands
D. sebaceous glands
E. mammary glands
3. Action potentials are conducted into the skeletal muscle fiber by
A. motor end plates B. neuromuscular junctions
C. transverse tubules D. triads
E. sarcoplasmic reticulum
4. The plates of bone found in spongy bone are called
A. osteons B. trabeculae
C. concentric lamellae D. interstitial lamellae
E. lacunae
5. How would blocking the activity of acetylcholinesterase affect skeletal
muscle?
A. It would make the muscles less excitable.
B. It would produce muscle weakness.
C. It would cause spastic paralysis (muscles are contracted and unable
to relax).
D. It would cause flaccid paralysis (muscles are relaxed and unable to
contract).
E. It would have no affect on skeletal muscles.
6. Interactions between actin and myosin filaments of the sarcomere are
responsible for
A. muscle fatigue
B. the conduction of neural information to the muscle fiber
C. muscle contraction
D. muscle relaxation
E. the striped appearance of skeletal muscle
7. The layer of the epidermis that contains cells undergoing division is
the
A. stratum corneum B. stratum lucidum
C. stratum germinativum D. stratum granulosum
E. stratum spinosum
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