VASCULAR
TYPES OF ARTERIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The heart contracts and sends bloods to the arteries.
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The heart relaxes and blood enters from the veins.
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Either A or B
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None of the above
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Detailed explanation-1: -Each cardiac cycle has a diastolic phase (also called diastole) where the heart chamber is in a state of relaxation and fills with blood that receives from the veins and a systolic phase (also called systole) where the heart chambers are contracting and pumps the blood towards the periphery via the arteries.
Detailed explanation-2: -The period of relaxation is called diastole in which the ventricle fills with blood and the period of ventricle contraction is called systole. Fig. 4.4 shows the cardiac cycle events for the left pump of the heart for two complete cycles. This figure illustrates the pressure–volume of the events.
Detailed explanation-3: -Diastole is the period of the cardiac cycle that encompasses ventricular relaxation, passive and active filling of blood into the heart, and the period just prior to ejection.