2C Cardiac Output-HR Flashcards
1
Q
What are the two components to cardiac output?
A
CO=SV x HR
2
Q
Which phase of slow response cardiac AP is affected by the parasympathetic NS again?
A
Phase 4, funny
3
Q
What nerve innervates the SA node, atria, and AV node for parasympathetic innervation? What NT? What Receptors?
A
VAGUS nerve! Ach, muscarinic receptors
4
Q
What nerve(s) innervate the SA node, atria, AV node, AND ventricles sympathetically? What NT? What Receptors?
A
T1-T4….NorEpi, Beta-1 receptors
5
Q
What can thyroid hormones do to HR?
A
Elevate HR
6
Q
What can Ions do to HR?
A
Hyperkalemia AND hypoKalemia can decrease HR
