Heart Anatomy

Question 1

Myocardium

Answer 1

Heart tissue that is mainly cardiac muscle

Question 2

Pericardium

Answer 2

Double membrane sac that surrounds the heart

Question 3

Coronary arteries

Answer 3

Brings oxygenated blood to myocardium

Question 4

Atrioventricular valves (AV)

Answer 4

Right AV has 3 flaps (tricuspid)
Left AV has 2 flaps (bicuspid)
1 kind of heart valve

Question 5

Atrioventricular valves function

Answer 5

Blood returning to the heart fills the atria, pressuring the AV’s to open
As ventricles fill, AV’s flaps hang into ventricles
Atria contracts, forcing more blood into ventricles

Question 6

Semi-lunar valves

Answer 6

-2 kind of heart valve
-Between ventricle and aorta
-As ventricles contract, pressure is increased and blood is pushed against the semi lunar valves, forcing them open
-As ventricles relax, pressure falls and blood flows back from arteries, forcing the valves closed