controlling resting heart rate Flashcards
1
Q
what single term describes the cardiac muscle
A
myogenic
2
Q
what does myogenic mean
A
the electrical impulses are generated within the heart
3
Q
where is the sinoatrial node (SAN) and what does it do
A
the right atrium, causes atrium systole by creating an electric impulse
4
Q
where do the electrical impulses from the SAN go to
A
the atrioventricular node (AVN) in the atrium
5
Q
where does the electrical impulse from the AVN go to
A
the Bundle of His in between the left and right atrium
6
Q
what is the Bundle of His made of
A
Purkyne tissue
7
Q
what causes the ventricles to contract
A
the electrical impulse running along the
Purkyne fibres at the base of the heart
