Human Heart and Its Working CDS Questions

CDS Biology

Human Heart and Its Working MCQ Questions


7.
The muscular wall of the left ventricle is considerably thicker than that of the right ventricle mainly because the left ventricle:
A.
Receives a far greater volume of blood than the right ventricle does
B.
Must pump blood at a much higher pressure throughout the entire systemic circulation to all organs of the body
C.
Pumps blood only to the lungs, which is a relatively short distance away
D.
Is not directly connected to any major blood vessel at all
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ANSWER :
B. Must pump blood at a much higher pressure throughout the entire systemic circulation to all organs of the body
8.
The muscular partition that separates the right and left sides of the heart, preventing any mixing of oxygenated and deoxygenated blood, is collectively known as the cardiac:
A.
Valvular ring
B.
Septum (comprising the interatrial and interventricular septum)
C.
Pericardial wall
D.
Coronary partition
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ANSWER :
B. Septum (comprising the interatrial and interventricular septum)
9.
The valve located between the right atrium and the right ventricle, distinguished by having three flaps or cusps, is called the:
A.
Aortic semilunar valve
B.
Tricuspid valve
C.
Pulmonary semilunar valve
D.
Bicuspid (mitral) valve
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ANSWER :
B. Tricuspid valve
10.
The valve located between the left atrium and the left ventricle, distinguished by having only two flaps or cusps, is called the:
A.
Tricuspid valve
B.
Aortic semilunar valve
C.
Bicuspid (mitral) valve
D.
Pulmonary semilunar valve
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ANSWER :
C. Bicuspid (mitral) valve
11.
The large blood vessels that carry deoxygenated blood from the upper and lower regions of the body into the right atrium are collectively called the:
A.
Superior and inferior venae cavae
B.
Coronary arteries
C.
Pulmonary arteries
D.
Pulmonary veins
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ANSWER :
A. Superior and inferior venae cavae
12.
The blood vessels that carry freshly oxygenated blood from the lungs into the left atrium are called the:
A.
Venae cavae
B.
Pulmonary veins
C.
Coronary veins
D.
Pulmonary arteries
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ANSWER :
B. Pulmonary veins