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Cardiovascular > The Cardiac Cycle > Flashcards

The Cardiac Cycle Flashcards

1
Q

What is the first stage of the cardiac cycle?

A

Late diastole

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2
Q

What is the second stage of the cardiac cycle?

A

Atrial systole

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3
Q

What is the third stage of the cardiac cycle?

A

Isovolumic ventricular contraction

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4
Q

What is the fourth stage of the cardiac cycle?

A

Ventricular ejection

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5
Q

What is the last stage of the cardiac cycle?

A

Isovolumic ventricular relaxation

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6
Q

What is diastolic pressure?

A

the blood pressure when the atria are empty and filling

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7
Q

What is systolic pressure?

A

The blood pressure when the ventricles are full and emptying

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8
Q

What is the ejection fraction?

A

The percentage of blood leaving the heart after each contraction

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9
Q

What is the ratio for ejection fraction?

A

Systolic volume/ End diastolic volume

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10
Q

What is the stroke volume?

A

The difference between the end systolic volume and the end diastolic volume

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11
Q

What is the end diastolic volume?

A

The volume of blood at the end of the ventricle filling

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12
Q

What is the end systolic volume?

A

The volume of blood at the end of the ventricle contracting

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13
Q

What is diastole?

A

The part of the cardiac cycle when the heart fills with blood

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14
Q

What is systole?

A

The part of the cardiac cycle when the ventricles contract

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15
Q

What is the normal divide between systole and diastole?

A

systole 1/3

diastole 2/3

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16
Q

What is the pressure that forces the blood around the body?

A

The mean arterial pressure

17
Q

What is a phonocardiogram?

A

A recording of the sounds of the heart

18
Q

What are the two normal sounds heard on the phonocardiogram?

A

Mitral and tricuspid valves closing

Aortic and pulmonary valves closing

19
Q

Why is a murmur seen on a phonocardiogram?

A

Stenosis of aortic/pulmonary or regurgitation through mitral/tricuspid valves

20
Q

Why is a murmur through the diastolic phase seen on a phonocardiogram?

A

Stenosis of mitral/tricuspid valves or regurgitation through aortic/pulmonary

21
Q

Why is a a constant sound behind the two normal sounds seen on a phonocardiogram?

A

Because of a septal defect

22
Q

What is a septal defect?

A

One of the holes in the heart doesn’t close

Cardiovascular (34 decks)

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