Week 6:Cardiovascular Anatomy Review Flashcards

1
Q

What is cardiac ouptput?

A

volume of blood ejected from the heart each minute

CO=SV*HR

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2
Q

How to calculate stroke volume?

A

the difference between the diastolic volume and the systolic volume

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3
Q

What factors influence the stroke volume?

A

preload, afterload, and contractility

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4
Q

What is preload?

A

the volume of blood in the heart

chamber volume BEFORE contraction

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5
Q

What is afterload?

A

force opposing ejection of the blood from the heart

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6
Q

What is contractility?

A

contractile capabilities of the heart?

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7
Q

What is Frank-Starling law?

A

the law that states that an increase in resting muscle fiber length results in greater muscle tension. Called the “length-tension” relationship

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8
Q

What does Frank Starling law say about the heart?

A

It has the ability to change it’s force of contraction in response to changes in venous return

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9
Q

What are the three fluid compartments of a cell?

A

intracellular, extracellular, interstitial

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10
Q

What is hydrostatic pressure?

A

the force that pushed fluid out of the capillaries into the interstitial and intracellular space

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11
Q

What is oncotic pressure?

A

the force that pulls fluid from the interstitial and intracellular space into the capillary

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12
Q

What is Starling’s law of capillary forces?

A

oncotic and hydrostatic pressure oppose each other at every capillary membrane and attempt to balance each other out

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13
Q

What happens with left ventricle failure?

A

The backward effect creates a buildup of hydrostatic pressure in the left atrium, pulmonary veins, and pulmonary capillaries

The forward failure effect causes decreased perfusion to the brain, kidneys, and other organs

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14
Q

What can left ventricle failure cause?

A

pulmonary edema

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