Human Heart and Its Working CDS Questions

CDS Biology

Human Heart and Its Working MCQ Questions


13.
The heart's own muscular tissue (myocardium) receives its essential supply of oxygenated blood and nutrients through a dedicated set of blood vessels known as the:
A.
Renal arteries
B.
Coronary arteries
C.
Pulmonary arteries
D.
Carotid arteries
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ANSWER :
B. Coronary arteries
14.
Within the thoracic cavity, the human heart is generally located:
A.
Entirely within the abdominal cavity, well below the diaphragm
B.
Entirely on the right side of the chest, away from both lungs
C.
Between the two lungs, with its pointed apex tilted slightly towards the left side of the chest
D.
Directly behind the liver, within the lower abdominal region
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ANSWER :
C. Between the two lungs, with its pointed apex tilted slightly towards the left side of the chest
15.
The approximate weight of a healthy adult human heart is about:
A.
30 kilograms
B.
3 kilograms
C.
30 grams
D.
300 grams
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ANSWER :
D. 300 grams
16.
The complete pathway followed by blood as it travels from the right side of the heart, through the lungs, and back to the left side of the heart is known as:
A.
Pulmonary circulation
B.
Portal circulation
C.
Coronary circulation
D.
Systemic circulation
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ANSWER :
A. Pulmonary circulation
17.
The complete pathway followed by oxygenated blood as it travels from the left ventricle throughout the entire body and back as deoxygenated blood to the right atrium is known as:
A.
Systemic circulation
B.
Pulmonary circulation
C.
Coronary circulation
D.
Foetal circulation
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ANSWER :
A. Systemic circulation
18.
Deoxygenated blood returning from the body first enters which chamber of the heart?
A.
Right atrium
B.
Left ventricle
C.
Left atrium
D.
Right ventricle
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ANSWER :
A. Right atrium