QUESTION 46 What directly dictates when heart valves open and close in order to pump blood from one chamber to the next? a. Pressure differences between chambers b. Contractility of the heart c. Autonomic activity d. Exercise e. End-systolic volume QUESTION 47 On an ECG trace, which event corresponds to ventricular repolarization? a. P b. T c. R d. S e. Q
QUESTION 46 What directly dictates when heart valves open and close in order to pump blood from one chamber to the next? a. Pressure differences between chambers b. Contractility of the heart c. Autonomic activity d. Exercise e. End-systolic volume QUESTION 47 On an ECG trace, which event corresponds to ventricular repolarization? a. P b. T c. R d. S e. Q
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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QUESTION 46
- What directly dictates when heart valves open and close in order to pump blood from one chamber to the next?
|
a. |
Pressure differences between chambers |
|
|
b. |
Contractility of the heart |
|
|
c. |
Autonomic activity |
|
|
d. |
Exercise |
|
|
e. |
End-systolic volume |
QUESTION 47
- On an ECG trace, which event corresponds to ventricular repolarization?
|
a. |
P |
|
|
b. |
T |
|
|
c. |
R |
|
|
d. |
S |
|
|
e. |
Q |
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