Cardiac Cycle
Cardiac Cycle
Human Heart
Structure of Human Heart :-
The heart is a muscular, conical and dark red coloured organ that act as a pump of the blood circulatory system in our body.In man, the heart weighs about 0.43 % of the body.The heart is made up of special type of muscles known as cardiac muscles. These muscles contract with considerable force, squeezing the blood out into the arteries which carries it to the different body parts. A single cycle of circulation of blood into the heart is known as cardiac cycle.
Mechanism of Cardiac Cycle :-
The heart is a muscular, conical and dark ________________ colored organ that act as a pump of the blood circulatory system in our body. | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following are correct ? (a) A single cycle of circulation of blood into the heart is known as cardiac cycle. (b) Joint diastole represents the time period when the ventricles are relaxed (c) Systole represents the time during when the left and the right ventricles contract and eject blood into the aorta and pulmonary artery. | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct ? (a) During ventricular diastole the heart relaxes and expands while receiving blood through both atria.This stage represents ventricular diastole. It lasts for 0.4 sec. (b) Artrial contraction pushes blood into the ventricles. (c) Cardiac cycle a short period both atria and ventricle relaxes called as joint diastole. | |||
| Right Option : D | |||
| View Explanation | |||
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