the heart Flashcards
1
Q
what is the four chambers of the heart?
A
Right atrium, left atrium, right ventricle, left ventricle
2
Q
what separates the atrium’s?
A
the valves
3
Q
what is the proccess?
A
vena cava brings deoxygynated blood from body
blood passes from heart to lungs in the pulmonary artery
lungs blood collects oxygen
oxygenated blood passes through lungs to heart pulmonary vein
pumped from the heart to the body in the aora
4
Q
what happens when blood enters atrium?
A
they contract blood forced into ventricles
5
Q
what do the ventricles do?
A
contract - force blood out of the heart
6
Q
what do the valves do?
A
stop blood from flowing backwards when ventricles contract
7
Q
what is the natrual resting heartrate controlled by?
A
a pacemaker - right atrium
