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1

mid-to-late diastole

ventricular filling

2

During ventricular filling heart blood pressure is___ as blood enters ___ and flows into ventricles

low, atria

3

during ventricular systole atria______

relax

4

During ventricular systole, rising_________ results in closing of AV valves

ventricular pressure

5

During ventricular systole isovolumetric contraction phase is when

(all 4 valves are closed)

6

During ventricular filling AV valves are ____, then ______ occurs

open, atrial systole

7

During ventricular systole rising ventricular pressure results in ______ of AV valves

closing

8

isovolumetric contraction phase happens during

ventricular systole

9

During ventricular systole rising ventricular pressure results in closing of _______

AV valves

10

During ventricular systole when all 4 valves are closed its called

isovolumetric contraction phase

11

During ventricular systole, it opens semilunar valves

ventricular ejection phase

12

Steps in ventricular systole

atria relax

rising ventricular pressure results in closing of AV valves

isovolumetric contraction phase (all 4 valves are closed)

ventricular ejection phase opens semilunar valves

13

steps in ventricular filling

heart blood pressure is low as blood enters atria and flows into ventricles

AV valves are open, then atrial systole occurs

14

what comes first in the Phases of the Cardiac Cycle? ventricular systole or ventricular filling

ventricular filling

15

early diastole

isovolumetric relaxation

16

during isovolumetric relaxation _______ relax

ventricles

17

During isovolumetric relaxation, backflow of blood in _____ and _______ closes semilunar valves

aorta and pulmonary trunk,

18

During isovolumetric relaxation, atrioventricular valves also remain _______ until ________ drops below ______ pressure (all 4 valves are closed)

closed, ventricular pressure, atrial

19

steps in isovolumetric relaxation

ventricles relax

backflow of blood in aorta and pulmonary trunk closes semilunar valves

atrioventricular valves also remain closed until ventricular pressure drops below atrial pressure (all 4 valves are closed)

20

is determined by venous return and neural and hormonal controls

cardiac output

21

under stress, the ______________ increases heart rate and stroke volume

cardioacceleratory center

22

cardiac output is determined by______ and _____ and ______ controls

venous return, neural and hormonal

23

resting heart rate is controlled by the _______ center* via the _______ nerves

cardioinhibitory, vagus

24

under stress does the the end systolic volume (ESV) increase or decrease

decrease

25

under stress does the MAP (mean arterial pressure) increases or decrease

increase

26

under stress, the cardioacceleratory center* increases ________ and __________

heart rate and stroke volume

27

is controlled by the cardioinhibitory center* via the vagus nerves

resting heart rate

28

cardioinhibitory center is located in the ______

medulla oblongata

29

stroke volume is controlled by______

venous return

30

blood flow is dependent on ______ & ________

pressure gradient & resistance