Action potiental Flashcards
1
Q
In autorhythmic cell, what is moving in and out of the cell?
A
Na+2 goes in and K+ goes out
2
Q
how does the parasympathetic branch change membrane permeability of the autorhythmic cells?
A
Neurons from vagus nerve release acetylcholine binding to muscarinine receptors
3
Q
how does the parasympathetic branch effect the heart rate?
A
It slows it down
4
Q
How does the sympathetic branch change membrane permeability of autorhythmic cells
A
Adrenal glands releases Norepinophrine and epinephrine that binds to beta 1 receptors causing Na+2 permeability
5
Q
How does the sympathetic branch effect the heart rate
A
it increases it
6
Q
Where does the action potential go after Purkinje fibers?
A
Ventricles
7
Q
How does the action potential spread from cell to cell?
A
Purkinje Fibers
