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During the greatest pressure changes within the ventricles during the cardiac cycle, the AV valves must be _______ and the semilunar valves must be _______.   a. open; closed   b. closed; open   c. open; open   d. closed; closed   e. Whether these valves are open or closed is inconsequential   QUESTION 45 Veins always carry blood away from the heart. True False

During the greatest pressure changes within the ventricles during the cardiac cycle, the AV valves must be _______ and the semilunar valves must be _______.   a. open; closed   b. closed; open   c. open; open   d. closed; closed   e. Whether these valves are open or closed is inconsequential   QUESTION 45 Veins always carry blood away from the heart. True False

Human Anatomy & Physiology (11th Edition)
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 44

  1. During the greatest pressure changes within the ventricles during the cardiac cycle, the AV valves must be _______ and the semilunar valves must be _______.
 

a.

open; closed
 

b.

closed; open
 

c.

open; open
 

d.

closed; closed
 

e.

Whether these valves are open or closed is inconsequential

 

QUESTION 45

  1. Veins always carry blood away from the heart.
    True
    False
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