Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
SlideshowReport

Cardiac conduction system

Description
The sinoatrial (SA) node in the wall of the right atrium, is the cardiac pacemaker – it generates about 70 action potentials per minute

Gap junctions between adjacent cells allow action potentials generated by the SA node to spread across the atria

The signal spreads from the SA node to the atrioventricular (AV) node, then to junctional fibers in the septum, so the heart contracts from the bottom up


(cardiac AV node
Related Images
Add Comment
Explore
Post your homework questions and get free online help from our incredible volunteers
  1185 People Browsing
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 431

Previous poll results: Do you believe in global warming?