Exam 3 Cardiac Output

Question 0

cardiac reserve

Answer 0

is the difference between exercising CO and non exercising CO

Question 1

CO formula

Answer 1

heart rate X stroke volume, average is 5L/min

Question 2

stroke volume

Answer 2

the amount of blood that the heart pumps per beat average is 70

Question 3

Starlings law of heart

Answer 3

the heart pumps all the blood that returns to it via veins

Question 4

cardiomyopathy

Answer 4

heart muscle cells are sick, occurs from mutation or viral infection

Question 5

preloading

Answer 5

amount of stretch to ventricular walls, sacromeres overlap, preloading is most important factor in SV

Question 6

ejection fraction

Answer 6

SV/EDV is the % of blood ejected by ventricles/beat

Question 7

contractility

Answer 7

how strongly the heart can contract based on health of the cell

Question 8

afterload

Answer 8

blood pressure heart pumps again

Question 9

chronotropic factors

Answer 9

positive > hr, negative < hr

Question 10

ionotropic factors

Answer 10

positive > contractility, negative < contractility