L16 - Heart Electrophysiology Flashcards
1
Q
What do intercallated discs in cardiac muscle allow for?
A
The flow of electrical signals from one cell to another.
2
Q
What provides the intercalated discs with structural integrity?
A
Desmosomes
3
Q
What are the 3 cardiac cell types?
A
- Nodal cells
- Conducting cells
- Myocytes
4
Q
Where is heartbeat initiated?
A
At the sinoatrial node
5
Q
Where does conduction from the SAN travel to?
A
The atria and atrioventrical node, then the artioventricular ring.
6
Q
What distributes the signal to the ventricular muscle cells?
A
The purkinje system
7
Q
Where is the sinoatrial node found?
A
In the posterior aspect of the atrium
8
Q
What do pacemaker cells show?
A
Automacitity and rhythmicity
