The Caridac Cycle

Question 1

What does the term ‘cardiac cycle’ mean?

Answer 1

Series of pressure changes within the heart which result in movement of blood

Question 2

Define stroke volume

Answer 2

The vol. of blood pumped out of LV of the heart during contraction

Question 3

Define diastole

Answer 3

Relaxation of heart muscles

Question 4

Define systole

Answer 4

Contraction of heart muscles

Question 5

Define mean arterial pressure

Answer 5

The average arterial pressure throughout one cardiac cycle

Question 6

Define end-diastolic volume. -

Answer 6

The amount of blood in the ventricles before the heart contracts.

Question 7

What makes the heart sounds?

Answer 7

Closing of AV valves and SL valves

Question 8

What causes coronary artery disease?

Answer 8

-accumulation of plaque in arteries
-restricts blood flow

Question 9

What are risk factors of coronary artery disease?

Answer 9

• genetic (diabetics)
• high b.p/cholesterol
• lifestyle

Question 10

How can you calculate the stroke volume?

Answer 10

End diastolic volume - end systolic volume

Question 11

What are the two examples of congenital heart disease?

Answer 11

Acyanotic
Cyanotic

Question 12

What’s the blood like in Acyanotic congenital heart disease?

Answer 12

-blood has normal blood O2 level

Question 13

What’s the blood like in Cyanotic congenital heart disease?

Answer 13

• blood has lower O2 level (blue colour)

Question 14

What’s the tetralogy of fallot referring to?

Answer 14

• 4 defects = Blue baby