MEDICAL
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: -What happens during systole? Systole is the period when the heart chambers contract that causes the ejection of blood into the aorta and pulmonary trunk.
Detailed explanation-2: -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-3: -Systole is the contraction of the left and right ventricles, resulting in blood flow to the body and lungs, respectively. Diastole includes the contraction of the atria and the filling of the ventricles. Thus, in the systolic phase of cardiac cycle, blood leaves the heart.
Detailed explanation-4: -Atrial systole: lasts about 0.1 seconds-both atria contract and force the blood from the atria into the ventricles. Ventricular systole: lasts about 0.3 seconds-both ventricles contract, blood is forced to the lungs via the pulmonary trunk, and the rest of the body via the aorta.