the heart Flashcards
1
Q
What determines when a valve opens/closes?
A
Higher pressure in one section will force valves open or closed.
When the pressure is higher in the atria than in the ventricle, the atrioventricular valves will open.
2
Q
what can the chambers of the heart not do ?
A
The four chambers cannot contract at the same time.
3
Q
systole
A
When a chamber of the heart is contracting
4
Q
diastole
A
When a chamber of the heart is relaxed
