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Question

Choose the correct answer from the four options given below.

Pulse wave is mainly caused by the:


A

Systole of atria

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B

Diastole of atria

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C

Systole of the left ventricle

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D

Systole of the right ventricle

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Solution

The correct option is C

Systole of the left ventricle


Systole of atria:

Blood comes from the auricles to the ventricle due to systolic pressure of the atria or auricles.

Diastole of atria:

During the diastolic condition of atria, the deoxygenated blood from the body comes to the right atrium through the superior and inferior vena cava and oxygenated blood from the lungs to the left atrium by the pulmonary vein.

Systole of the ventricle:

(a) Due to systole of the left ventricle the oxygenated blood supply to the whole body by the aorta.

(b) This systolic pressure of the left ventricle creates a pulse wave.

Systole of the right ventricle:

(a) systole of the right ventricle passed the blood to the lungs through the pulmonary artery.

(b) Pulse waves are mainly caused by the systole of the left ventricle.

Hence, the correct option is option C.


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