Cardiovascular System

Question 1

Tricuspid valve

Answer 1

Right AV valve
Guards the right atrioventricular orifice; free edges of three flaps of endocardium are attached to papillary muscles by chordae tendineae.

Question 2

`Bicuspid, or mitral valve

Answer 2

left AV valve): Similar in structure to tricuspid valve except has only two flaps.

Question 3

Semilunar valves:

Answer 3

half-moon–shaped flaps growing out from the lining of the pulmonary artery and aorta.Prevent blood from flowing back into the ventricles from the aorta and pulmonary artery