Answers Lab06 BP
M33_MARI0000_00_SE_CH33.qxd
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R E V I E W
S H E E T
NAME ____________________________________
EXERCISE
LAB TIME/DATE _______________________
Human Cardiovascular
Physiology: Blood Pressure and Pulse Determinations
Cardiac Cycle
1. Using the grouped sets of terms to the right of the diagram, correctly identify each trace, valve closings and openings, and each time period of the cardiac cycle.
a
c
1 2 b g
3
4
5 d 120
i f h
Pressure (mm Hg)
i
1. aortic pressure
k
2. atrial pressure
n
3. ECG
o
4. first heart sound
p
5. second heart sound
g
6. ventricular pressure
m
7. ventricular volume
h
8. aortic semilunar valve closes f
9. aortic semilunar valve opens e
80
40
l
j
0 k b, d
10. AV and semilunar valves closed Volume (ml)
120
m
60
R
(mv)
0.5
T
P
n
0
Q
S
0.2
p
o
0.4
0.6
0.8
Time (sec)
208
Copyright © 2011 Pearson Education, Inc.
j
11. AV valve closes
l
12. AV valve opens
a, e
13. ventricular diastole
c
14. ventricular systole
M33_MARI0000_00_SE_CH33.qxd
3/29/11
4:46 PM
Page 209
2. Define the following terms. systole: Contraction of the ventricles (general usage) diastole: Ventricular relaxation (general usage) cardiac cycle: One complete heartbeat including atrial and ventricular contraction
3. Answer the following questions concerning events of the cardiac cycle.
When are the AV valves closed? During ventricular systole
What event within the heart causes the AV valves to open? Ventricular pressure Ͻ atrial pressure
When are the semilunar valves closed? During the period of relaxation of the heart as a whole and during atrial contraction.
What event causes the semilunar valves to open? Ventricular pressure Ͼ pressure in great arteries
Are both sets of valves closed during any part of the cycle? Yes
If so, when? Momentarily after atrial contraction and ventricular systole.
Are both sets of valves open during any part of the cycle? No
At what point in the cardiac cycle is
33
3/29/11
4:46 PM
Page 208
R E V I E W
S H E E T
NAME ____________________________________
EXERCISE
LAB TIME/DATE _______________________
Human Cardiovascular
Physiology: Blood Pressure and Pulse Determinations
Cardiac Cycle
1. Using the grouped sets of terms to the right of the diagram, correctly identify each trace, valve closings and openings, and each time period of the cardiac cycle.
a
c
1 2 b g
3
4
5 d 120
i f h
Pressure (mm Hg)
i
1. aortic pressure
k
2. atrial pressure
n
3. ECG
o
4. first heart sound
p
5. second heart sound
g
6. ventricular pressure
m
7. ventricular volume
h
8. aortic semilunar valve closes f
9. aortic semilunar valve opens e
80
40
l
j
0 k b, d
10. AV and semilunar valves closed Volume (ml)
120
m
60
R
(mv)
0.5
T
P
n
0
Q
S
0.2
p
o
0.4
0.6
0.8
Time (sec)
208
Copyright © 2011 Pearson Education, Inc.
j
11. AV valve closes
l
12. AV valve opens
a, e
13. ventricular diastole
c
14. ventricular systole
M33_MARI0000_00_SE_CH33.qxd
3/29/11
4:46 PM
Page 209
2. Define the following terms. systole: Contraction of the ventricles (general usage) diastole: Ventricular relaxation (general usage) cardiac cycle: One complete heartbeat including atrial and ventricular contraction
3. Answer the following questions concerning events of the cardiac cycle.
When are the AV valves closed? During ventricular systole
What event within the heart causes the AV valves to open? Ventricular pressure Ͻ atrial pressure
When are the semilunar valves closed? During the period of relaxation of the heart as a whole and during atrial contraction.
What event causes the semilunar valves to open? Ventricular pressure Ͼ pressure in great arteries
Are both sets of valves closed during any part of the cycle? Yes
If so, when? Momentarily after atrial contraction and ventricular systole.
Are both sets of valves open during any part of the cycle? No
At what point in the cardiac cycle is