Mechanical Activity Of The Heart

Question 1

The quantity of blood in the ventricle just prior to systole or after atrial systole

Answer 1

End diastolic volume

Question 2

End diastolic volume

Answer 2

120-130 mL

Question 3

Quantity of blood ejected during systole

Answer 3

Stroke volume

Question 4

Quantity of blood ejected per minute

Answer 4

Cardiac output

Question 5

Quantity of blood ejected per beat

Answer 5

Stroke volume

Question 6

Average stroke volume

Answer 6

70-80 mL

Question 7

Amount of blood remaining in the ventricle after ejection

Answer 7

End systolic volume

Question 8

End systolic volume

Answer 8

50-70

Question 9

Quantity of blood remaining in the ventricle after maximal systolic ejection

Answer 9

Residual volume

Question 10

Volume of blood that can still be ejected; qty of blood remaining in the ventricle at the end of systolic volume-residual volume

Answer 10

Systolic reserve volume

Question 11

Systolic reserve volume when ejected becomes part of the ______________.

Answer 11

Stroke volume

Question 12

Potential volume increase which the heart can accommodate under normal physiological conditions; potential volume when venous return increases

Answer 12

Diastolic reserve volume

Question 13

Cardiac output

Answer 13

5L ; stroke volume + heart rate

Question 14

Cardiac index

Answer 14

3.2 L

Question 15

Cardiac output per minute per sq. meter of body surface

Answer 15

Cardiac index

Question 16

The maximum percentage that the cardiac output can increase above normal

Answer 16

Cardiac reserve

Question 17

Percentage of end diastolic volume ejected

Answer 17

Ejection fraction

Question 18

Volume of blood returning to the heart per unit time (per minute)

Answer 18

Venous return

Question 19

Degree of tension on the muscle when it begins to contract

Answer 19

Preload

Question 20

Load against which the muscle exerts its contractile force

Answer 20

Afterload

Question 21

Preload

Answer 21

End diastolic pressure when the ventricle has become filled

Question 22

Afterload

Answer 22

Pressure in the aorta leading from the ventricle; systolic pressure

Question 23

Preload is the pressure during ____________________________

Answer 23

Filling of the ventricle

Question 24

________________ ___________________ against which the ventricle mst contract is known as the afterload

Answer 24

Arterial pressure