Pressure-Volume relationship

Question 1

Cardiac preload for a cycle is set at the __________ volume.

Answer 1

end-diastolic (iBook pg. 27)

Question 2

True or false: afterload on the heart is completely determined by the arterial pressure.

Answer 2

False. Afterload is also a function of ventricular volume. (iBook pg. 29)

Question 3

The smallest ventricular volume in a cardiac cycle is called the __________.

Answer 3

End systolic volume (ESV). (iBook pg. 28)

Question 4

True or false: Increasing EDV by a small amount increases ESV by the same amount in a normal heart.

Answer 4

False. In a health heart under normal conditions, the ESV is not increased much even when EDV changes, up or down. (iBook pg. 28)

Question 5

The afterload on the ventricle is set by _____________.

Answer 5

the EDV and arterial pressure (iBook pg. 29)

Question 6

An increase in diastolic arterial pressure with all else equal should _____________ ESV.

Answer 6

increase (iBook pg. 30)

Question 7

The location of the end-systolic pressure volume (ESPV) curve is set by the level of _________.

Answer 7

contractility (iBook pg. 31)

Question 8

ESV is determined by the _______, ________ and the _________.

Answer 8

EDV, arterial diastolic pressure, location of the ESPV. (iBook pg. 31)

Question 9

If the ESPV is increased and all else is equal, the ESV will __________.

Answer 9

decrease (iBook pg. 31)

Question 10

The EDV sets the ____________ for the next cardiac cycle.

Answer 10

preload (iBook pg. 28)

Question 11

The EDV together with the arterial diastolic pressure determine the ___________ for the next cardiac cycle.

Answer 11

afterload (iBook pg.