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During the ejection period, _______. During the ejection period, _______. the atria are filling blood is pumped into the pulmonary trunk blood is pumped into the aorta and the pulmonary trunk blood is pumped into the aorta the ventricles are filling Request Answer Part B Cardiac output is _______. Cardiac output is _______. equal to heart rate times (EDV minus ESV) equal to heart rate times stroke volume equal to blood flow equal to blood flow and equal to heart rate times stroke volume All of the above. Request Answer Part C The left side of the heart pumps blood _______. The left side of the heart pumps blood _______. to the lungs through the tricuspid valve and to the lungs through the tricuspid valve through the aortic valve Request Answer Part D What variable(s) can the cardiovascular system alter to maintain blood pressure

Sagot :

Lanuelidn

Answer:

A. Blood is pumped into the aorta and the pulmonary trunk.

B. All of the above.

C. Through the aortic valve.

D. Resistance, stroke volume and heart rate.

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

Additionally, the right atrioventricular valve (AV) also referred to as the tricuspid valve is located on the right dorsal side of the human heart. The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.

In conclusion, the following can be deduced;

A. During the ejection period of the cardiac cycle, the mammalian heart pumps blood into the aorta and the pulmonary trunk.

B. Cardiac output can be defined as the volume of blood that is being pumped by the mammalian heart through the left and right ventricle per unit time (minute).

C. The left side of the mammalian heart in all living organism pumps blood through the aortic valve.

D. The variables the cardiovascular system can alter to maintain blood pressure include the following; resistance, stroke volume and heart rate.

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