Histology-World!

 

 

 

Histology Testbank: Cardiovascular System 1

 

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 of the heart is composed of cardiac muscle?
a. Epicardium
b. Pericardium
c. Myocardium
d. Endocardium
e. Endomysium

2.
Where is the myocardium the thickest?
a. Right atria
b. Left atria
c. Right ventricle
d. Left ventricle
e. Both right and left ventricle

3.
What is the connective tissue sac surrounding the heart?
a. Epicardium
b. Pericardium
c. Myocardium
d. Endocardium
e. Endomysium

4.
What is the connective tissue called which surrounds an individual cardiac
muscle fiber?
a. Epicardium
b. Pericardium
c. Myocardium
d. Endocardium
e. Endomysium

5.
What is the pacemaker of the heart?
a. Sinoatrial node
b. Atrioventricular node
c. Bundle of His
d. Right bundle branch
e. Purkinje fiber

6.
Which of the following is not true regarding the endocardium?
a. The endocardium contains abundant adipose tissue
b. The endocardium is layered
c. The endocardium contains blood vessels
d. The endocardium contains smooth muscle
e. The endocardium is lined by endothelium

7.
What is the atrioventricular bundle?
a. Sinoatrial node
b. Atrioventricular node
c. Bundle of His
d. Right bundle branch
e. Purkinje fiber

8.
Where is endothelium located?
a. Epicardium
b. Pericardium
c. Myocardium
d. Endocardium
e. Endomysium

.
"Pulling on heartstrings" refers to strong feelings of love or sympathy pulling one's conscience. What anatomical structure is it a reference to?
a. Sinoatrial node
b. Bundle of His
c. Right bundle branch
d. Purkinje fiber
e. Chordae tendinae

10.
Where are the blood vessels which supply the heart located?
a. Epicardium
b. Pericardium
c. Myocardium
d. Endocardium
e. Endomysium

Click here for answers and detailed explanations.