CV 5

Question 1

3 causes of dysrhythmia

Answer 1

Channel malfunction
Conduction defects
Alterations in resting membrane potential

Question 2

Stenosis

Answer 2

Valves are too stiff and don’t open well

Question 3

Insufficiency

Answer 3

When valves don’t close well and they leak

Same as regurgitation

Question 4

Valves at diastole

Answer 4

AV valves open

SL valves shut

Question 5

Valves at systole

Answer 5

AV valves shut

SL valves open

Question 6

Stenotic valves

Answer 6

Only open part way
Smaller radius
Higher resistance

Question 7

Insufficient valves

Answer 7

Open part way for backward flow
Smaller radius at that time
Higher resistance

Question 8

When does diastole start and stop?

Answer 8

Begins when the aortic valve closes, and ends when the atrioventricular valve closes

Question 9

When does systole start and stop

Answer 9

Begins with the atrioventricular valve closes, ends when the aortic valve closes