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Instructions: For each histology question, pick the one best answer. This histology test bank is also useful for the histology questions on the USMLE (USMLE step 1). Click here for answers and detailed explanations.
1.
What is the covering of an individual muscle fiber?
a. Sarcoplasm
b. Perimysium
c. Endomysium
d. Epimysium
e. Sarcolemma
2.
What are the thick filaments composed of?
a. Myofilaments
b. Myosin
c. Muscle fibers
d. Myofibrils
e. Myocardium
3.
Which of the following is composed of cardiac muscle?
a. Biceps muscle
b. Tongue
c. Heart
d. Upper esophagus
e. Walls of the visceral organs
4.
What type of muscle contains centrally placed nuclei?
a. Smooth muscle
b. Cardiac muscle
c. Skeletal muscle
d. Both "a" and "b"
e. "a" "b" and "c"
5.
What is the point that a neuron contacts a muscle called?
a. Motor unit
b. Motor neuron
c. Motor end plate
d. Neuromuscular spindle
e. Neurotransmitter
6.
Which fiber type makes up slow-twitch muscle?
a. Red fibers
b. White fibers
c. Intermediate fibers
d. All of the above
e. None of the above
7.
Which fiber type uses more anaerobic metabolism?
a. Red fibers
b. White fibers
c. Intermediate fibers
d. All of the above
e. None of the above
8.
What is the dark band in muscle?
a. A band
b. I band
c. Z line
d. H band
e. M line
9.
What bisects the H band
a. A band
b. I band
c. Z line
d. E band
e. M line
10.
What type of muscle has intercalated discs?
a. Skeletal muscle
b. Cardiac muscle
c. Smooth muscle
d. Both "a" and "b"
e. "a" "b" and "c"
Click here for answers and detailed explanations.
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