1
Q
Aortic & Pulmonary artery valves.
A
Semi-lunar valves snap shut at end of systole to prevent backflow of blood.
2
Q
Atrioventricular valves.
A
- Prevent backflow of blood from ventricles into the atria.
- Close and open passively.
3
Q
What are the names of the valves between the atrium & ventricles (Left/Right)?
A
Atrioventricular valves.
Left = bicuspid vale (mitral valve)
Right = tricuspid valve
4
Q
What are the names of the valves between the ventricles & arteries (Left/Right)?
A
Semilunar valves.
Left = aortic valve
Right = pulmonary valve
5
Q
What is the “Lub” sound in a heart beat?
A
Sound of the AV valves closing.
6
Q
What is the “Dub” sound in a heart beat?
A
Sound of the aortic & pulmonary valves closing.
7
Q
What produces the “sound” of the heart beat?
A
Closing of the valves.
8
Q
Why do heart valves open & close?
A
Pressure differences.
C1/ Cardiovascular A&P
flashcards
Decks in class (8)
# Cards
