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PE + > Cardiovascular System > Flashcards

Cardiovascular System Flashcards

1
Q

What does the right side of the circulatory system take in?

A

Deoxygenated blood from the body

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2
Q

What does the right side of the circulatory system pump out?

A

Deoxygenated blood to the lungs

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3
Q

What are the components of the right side of the circulatory system?

A

Vena Cava Pulmonary artery
↓
Right atrium ↑
↓
Right ventricle ↑
⤻

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4
Q

What does the left side of the circulatory system take in?

A

Oxygenated blood from the lungs

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5
Q

What does the left side of the heart pump out?

A

Oxygenated blood to the whole body

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6
Q

What are the components of the left side of the circulatory system?

A

Aorta Pulmonary vein
↑ ↓
Left atrium
↑ ↓
Left ventricle
↑ ↲

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7
Q

What is the Cardiac Cycle

A

Everything that happens in the heart within 2 heartbeats

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8
Q

What are the 2 phases of the cardiac cycle?

A

Systole and Diastole

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9
Q

What is systole?

A

When the heart chambers contract and blood is pushed out of them

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10
Q

What is diastole?

A

When the heart is relaxing and the chambers are filling with blood

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11
Q

If heart rate is 60bpm, how many cardiac cycles occur per second?

A

1

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12
Q

How long do the two phases occur (in 1 second)

A

Systole = 0.3s
Diastole = 0.7s

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13
Q

What contracts during systole?

A

Atria then ventricles

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14
Q

During exercise, what happens to the time of diastole?

A

Slightly decreases

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15
Q

What is systolic pressure?

A

Ejection of the blood by ventricles contracting

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16
Q

What is diastolic pressure?

A

The lower pressure when the ventricles are relaxing

17
Q

What is the typical reading of pressure at rest?

A

120/80 mmHG
- 120mm of mercury (systolic)
- 80mm of mercury (diastolic)

18
Q

What is vasodilation?

A

When blood vessels widen to increase blood flow

19
Q

What is vasoconstriction?

A

When blood vessels narrow to reduce blood flow

20
Q

What is Starling’s Law?

A

The more the heart fills, the greater the ventricular contraction therefore the greater the stroke volume

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