exercise 15

Question 1

cardiac cycle

Answer 1

the sequence of all the electrical and mechanical events associated with a heartbeat

Question 2

AV valves will not close until

Answer 2

the pressure in the ventricles increases and becomes greater than the pressure in the atria

Question 3

SL valves will not open until

Answer 3

the pressure in the ventricles becomes greater than the pressure in the great arteries

Question 4

SL valves will not close until

Answer 4

the pressure in the ventricles is less than the pressure in the great arteries

Question 5

AV valves will not open until

Answer 5

pressure in the atria is greater than pressure in the ventricles

Question 6

closing of AV vales

Answer 6

S1 (lub); heard shortly after the beginning of ventricular systole (systole forces those valves closed); like right at R wave

Question 7

isovolumetric contraction

Answer 7

occurs during initial portion of ventricular systole; pressure builds up but not enough to eject blood

Question 8

closing of SL valves

Answer 8

S2 (dub); heard shortly after the beginning of ventricular diastole (after T wave)

Question 9

passive filling of ventricles

Answer 9

S3; during atrial and ventricular diastole

Question 10

final (active) filling of ventricles

Answer 10

S4; during atrial depolarization and ventricular diastole

Question 11

direction of flow

Answer 11

great veins, atria, AV valves, ventricles, SL vales, great arteries

Question 12

insufficient valve

Answer 12

valve does not close completely

Question 13

stenotic valve

Answer 13

valve does not open completely

Question 14

systolic murmur

Answer 14

a valve that should be open or closed during systole

Question 15

diastolic murmur

Answer 15

a valve that should be open or closed during diastole

Question 16

Murmur: AV valve during final filling in ventricular diastole

Answer 16

stenotic

Question 17

Murmur: SL valve during final filling in ventricular diastole

Answer 17

insufficient

Question 18

Murmur: AV valve during ejection phase of ventricular systole

Answer 18

insufficient

Question 19

Murmur: SL valve during ejection phase of ventricular systole

Answer 19

stenotic