electrical impulses of the heart Flashcards
1
Q
sinoatrial node
A
contracts cuaisng atria to contract, as atria contract, signal reaches 2nd node
located in right wall of atrium
stimulates muscle cell to contract and relax rhythmically
‘pacemaker’ sets the rate of contraction
2
Q
atrioventricular node
A
av node transmits signal to the bundle of His, these relay to perkinje fibres and initiates ventricle contraction
located at base of intraatrial septum