Blood exiting the left ventricle must pass through the _________ valve. A) mitra

Question

Blood exiting the left ventricle must pass through the _________ valve. A) mitral B) pulmonary C) tricuspid D) bicuspid E) aortic Blood leaves the right ventricle through the ________ valve to reach the capillaries supplying the lungs. A) aortic B) mitral C) pulmonary D) tricuspid E) bicuspid If the cusps of an atrioventricular valve are damaged or functionally impaired so that they do not close completely during the normal point in the cardiac cycle, blood may flow backwards. This is called _________. A) ischemia B) regurgitation C) thrombosis D) automaticity E) nodal depolarization There are many interconnections between the arterial branches of the coronary circulation, which function to maintain a constant blood supply to the muscle of the heart. These connections are called ___________. A) syncytium B) intercalation C) anastomoses D) prolapse E) autorhythmicity The inherent ability of cardiac muscle tissue to contract in the absence of neural or hormonal stimulation is called _______. A) threshold B) systole C) diastole D) autorhythmicity E) a cardiac pacemaker

Explanation / Answer

53 E Aortic

Aorta supplies blood to while body and aortic valve is locàtwd àt it a base.

54 C Pulmonary

Pulmonary valve is located at base of pulmonary artery and helps to supply blood to lungs

55 B regurgitation

It is name given to backflow of blood.

56. C Anastomoses

It refers to connections between blood channels

57 D autorhytymicity

Ability of heart to initiate It a own beating in a rhythmic manner without being controlled by other organ.

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