cardiac cycle

Question 1

major events atrial systole (A)

Answer 1

atria contract

final phase of ventricular filling

Question 2

EKG atrial systole (A)

Answer 2

P wave

PR interval

Question 3

valves atrial systole (A)

Answer 3

none

Question 4

major events isovolumetric ventricular contraction (B)

Answer 4

ventricles contract
ventricular pressure increases
ventricular volume is constant (all valves closed)

Question 5

EKG isovolumetric ventricular contraction (B)

Answer 5

QRS complex

Question 6

valves isovolumetric ventricular contraction (B)

Answer 6

mitral valve closes

Question 7

major events rapid ventricular ejection (C)

Answer 7

ventricles contract
ventricular pressure increases and reaches maximum
ventricles eject blood into arteries
ventricular volume decreases
aortic pressure increases and reaches maximum

Question 8

EKG rapid ventricular ejection (C)

Answer 8

ST segment

Question 9

valves rapid ventricular ejection (C)

Answer 9

aortic valve opens

Question 10

major events reduced ventricular ejection (D)

Answer 10

ventricles eject blood into arteries (slower rate)
ventricular volume reaches minimum
aortic pressure starts to fall as blood runs off into arteries

Question 11

EKG reduced ventricular ejection (D)

Answer 11

T wave

Question 12

valves reduced ventricular ejection (D)

Answer 12

none

Question 13

major events isovolumetric ventricular relaxation (E)

Answer 13

ventricles relaxed
ventricular pressure decreases
ventricular volume constant

Question 14

EKG isovolumetric ventricular relaxation (E)

Answer 14

none

Question 15

valves isovolumetric ventricular relaxation (E)

Answer 15

aortic valve closes

Question 16

major events rapid ventricular filling (F)

Answer 16

ventricles relaxed
ventricles fill passively with blood from atria
ventricular volume increases
ventricular pressure low and constant

Question 17

EKG rapid ventricular filling (F)

Answer 17

none

Question 18

valve rapid ventricular filling (F)

Answer 18

mitral valve opens

Question 19

major events reduced ventricular filling/diastasis (G)

Answer 19

ventricle relaxed

final phase of ventricular filling

Question 20

which phase for max ventricular volume?

Answer 20

atrial systole (A)

Question 21

which phase for max ventricular pressure?

Answer 21

rapid ventricular ejection (C)

Question 22

which phase for min ventricular volume?

Answer 22

reduced ventricular ejection (D)

Question 23

aortic stenosis

Answer 23

LVP pressure less than aortic pressure during ejection

aortic pressure rise slightly reduced

Question 24

mitral stenosis

Answer 24

LAP > LVP during filling
increasing LAP
resistance causes blood to back up, reducing LV filling

Question 25

aortic regurgitation

Answer 25

increase in volume and pressure in chamber
LE compensates by increase SV
increase in SV –> increases LVP

Question 26

mitral regurgitation

Answer 26

blood regurgitates from LV into atrium during systole
LAP increased
regurg flow decreases LV SV and causes enlargement of atrial chamber