PART A Which of the following summarizes Starling's Law of theheart? If sympathetic nerve activity to the heart is increased,contractility and therefore SV will also increase. If you contract the...

PART A

Which of the following summarizes Starling's Law of the heart?

If sympathetic nerve activity to the heart is increased, contractility and therefore SV will also increase.

If you contract the heart walls more forcefully, they will relax more quickly, resulting in a longer filling time.

If you increase pressure in the aorta, the filling time for the ventricle will be lengthened, resulting in a greater end diastolic volume and pressure.

If you put more blood into the ventricle, the walls of the ventricle are stretched out, causing the ventricle to contract more forcefully.

PART B

EDV = 200 mls ESV = 75 mls HR = 60 bpm Which of the following is true?

stroke volume = 60 x 125

ejection fraction = 75 / 200

cardiac output = 60 / 125

cardiac output = 60 x 125

PART C

Drugs that block angiotensin-converting enzyme would cause which of the following?

stimulation of reactive hyperemia

decrease in epinephrine release

decreased heart rate

activation of the parasympathetic nervous system

decreased mean arterial pressure

PART D

Given the following information, calculate the net filtration pressure: capillary hydrostatic pressure = 30 mm Hg; interstitial fluid hydrostatic pressure = 5 mm Hg; capillary oncotic pressure = 25 mm Hg; and interstitial fluid oncotic pressure = 10 mm Hg.

40 mm Hg, favoring filtration

10 mm Hg, favoring filtration

-10 mm Hg, favoring reabsorption

-40 mm Hg, favoring reabsorption

0 mm Hg, no net force

Nov 11, 2021

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PART A Which of the following summarizes Starling's Law of theheart? If sympathetic nerve activity to the heart is increased,contractility and therefore SV will also increase. If you contract the...

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