Pathophysiology Exam 2
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, Pathophysiology Exam 2 Practice Test
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1. Which of the following valves directs blood flow from A. Mitral
the left atrium to the left ventricle?
A. Mitral
B. Tricuspid
C. Aortic
D. Pulmonic
2. The layer of squamous cells that lines the cardiac B. endocardium
chambers and valves is called the:
A. myocardium
B. endocardium
C. epicardium
D. Pericardium
3. How much does the atrial kick increase the blood vol- C. 15%-20%
ume?
A. 5%-10%
B. 10%-15%
C. 15%-20%
D. 20%-25%
4. Which of the following waves corresponds with the AV B. C wave (The A wave cor-
valve bulging during ventricular contraction? responds with atrial con-
A. A wave traction, the C wave corre-
B. C wave sponds with the AV valve
C. D wave bulging during ventricu-
D. V wave lar contraction, and the V
wave corresponds to atrial
filling. There is no D wave.
5. What portions of the heart does the left anterior de- A. Septal, anterior, and
scending branch supply? apical
, Pathophysiology Exam 2 Practice Test
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A. Septal, anterior and apical
B. Lateral and Posterior
C. Lateral and septal
D. Posterior and apical
6. What is the name for the arrangement in which sepa- B. Syncytium
rate cells of the myocardium can function together?
A. Autoregulation
B. Syncytium
C. Ischemia
D. Myocyte
7. The structure that is composed of six polypeptide D. myosin
chains, two heavy chains, and four light chains is
called:
A. actin
B. tropomyosin
C. troponin
D. myosin
8. Which electrolyte is necessary for muscle contraction? C. Ca++
A. Na+
B. K+
C. Ca++
D. Mg++
9. Which of the following statments is true regarding C. Cardiac myocytes are
muscle contraction? terminally differentiated.
A. Calcium removal from the cytoplasm causes con-
traction.
B. Calcium entry into the cytoplasm causes relaxation.
C. Cardiac myocytes are terminally differentiated.