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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.
Which layer in an artery is primarily smooth muscle?
a. Tunica intima
b. Tunica media
c. Tunica externa
d. All of the above
e. None of the above
2.
A pronounced internal elastic membrane and external elastic membrane are distinguishing characteristics of which type of vessel?
a. Capillary
b. Arteriole
c. Venule
d. Elastic artery
e. Muscular artery
3.
Which of the following constitutes the microvascular bed of a tissue?
a. Capillaries
b. Capillaries and arterioles
c. Capillaries, arterioles, and post capillary venules
d. Capillaries, arterioles, post capillary venules, and veins
e. Capillaries, arterioles, post capillary venules, veins, and arteries
4.
What are wide, leaky capillaries called?
a. Continuous capillaries
b. Fenestrated capillaries
c. Sinusoidal capillaries
d. AV anastomoses
e. Venous sinus
5.
What is a direct route between arteries and veins called?
a. Continuous capillaries
b. Fenestrated capillaries
c. Sinusoidal capillaries
d. AV anastomoses
e. Venous sinus
6.
Which layer in an elastic artery is the largest thickest?
a. Tunica intima
b. Tunica albuginea
c. Tunica externa
d. Tunica vaculosa
e. Tunica media
7.
In which of the following is an arterial portal system found?
a. Kidney
b. Liver
c. Muscle
d. Brain
e. Stomach
8.
What are vasa vasorum?
a. Vasoactive material
b. Valves
c. Vasopressin secreting cells
d. Nerves
e. Blood vessels
9.
Which structure has only a few layers of muscle in the tunica media?
a. Capillary
b. Arteriole
c. Elastic artery
d. Muscular artery
10.
Which layer in a large vessel contains the nervi vascularis?
a. Tunica intima
b. Tunica media
c. Tunica externa
d. All of the above
e. None of the above
Click here for answers and detailed explanations.
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