Heart Valves

Question 1

When blood increases pressure in the atria, which valves are opened, allowing blood to flow into the ventricles?

Answer 1

ATRIOVENTRICULAR (AV) VALVES

RIGHT aka TRICUSPID VAVLE

LEFT aka BICUSPID/MITRAL VALVE

Question 2

When the ventricles ____________, the increased pressure forces the the AV valves closed.

Answer 2

CONTRACT

Question 3

The ____________ muscles contract to prevent the valves from being forced open in the opposite direction.

Answer 3

PAPILLARY

Question 4

When pressure from contraction closes the AV valves, which valves are opened?

Answer 4

PULMONARY and AORTIC VALVES

Question 5

Blood is ejected through the pulmonary and aortic valves into the ____________.

Answer 5

ARTERIES

Question 6

When the ventricles relax, blood in arteries flows back towards the heart, filling the cusps of the ___________ valves, and they close.

Answer 6

SEMILUNAR

Question 7

Heart valves prevent the ____________ of blood.

Answer 7

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