CV4

Question 1

where do the heart sounds occur in the wiggers diagram

Answer 1

A and B (highest marks)

Question 2

what is stroke volume

Answer 2

amount of blood ejected during a singular ventricular contraction

Question 3

whats the average stroke volume

Answer 3

70 ml

Question 4

whats the equation for stroke volume

Answer 4

SV = EDV - ESV

Question 5

what does the ESV provide

Answer 5

a safety margin in case the body requires more blood

Question 6

what is stroke volume modulated by

Answer 6

autonomic nervous system
venous return
certain drugs

Question 7

what is ejection fraction

Answer 7

percentage if blood that that is ejected from the heart

Question 8

how to calculate ejection fraction

Answer 8

EF = SV/EDV

Question 9

what is cardiac output

Answer 9

flow of blood delivered from one ventricle In a given period is the cardiac output

Question 10

how to calculate cardiac output

Answer 10

heart rate x stroke volume

Question 11

does the cardiac output of systemic and pulmonary match

Answer 11

yes - they have to because they feed into each other

Question 12

what is cardiac outputs units

Answer 12

L/min

Question 13

how much can CO rise during excercise

Answer 13

30-35 L

Question 14

what can cardiac output be modified by

Answer 14

adjusting heart rate or stroke volume

Question 15

what is cardiac output usually at rest

Answer 15

5 L/min

Question 16

which volume represents the maximal amount of blood in the ventricles

Answer 16

EDV