Topic 1a qwik review

Question 1

CO =

Answer 1

HR x SV

Question 2

Change in HR is caused by what? (2)

Answer 2

Autonomic innervation: Mainly sympathetic

Drugs

Question 3

Change in SV caused by ?

Answer 3

Autonomic innervation: Mainly sympathetic
Preload - (normally we are changing this)
Afterload
Changing intrinsic (# cross bridges in muscle) vs extrinsic contractility

Question 4

SV: Changing extrinsic - ie?

Answer 4

overall contractility

Question 5

With increased contractility, at any given preload/diastolic stretch, the muscle fibers are able to support ______

Answer 5

higher total tension

Question 6

SV: Changing intrinsic contractility is what?

Answer 6

changing preload