Sinuatrial node (SA) is the pacemaker of the heart because: O a. It has the largest rate of activity O b. It has the largest resting membrane potential O c. Is has autonomic innervations O d. It is affected by hormones Q e. It is protected by surrounding tissues

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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6T
Sinuatrial node (SA) is the pacemaker of the heart because:
O a. It has the largest rate of activity
out of
O b. It has the largest resting membrane potential
O c. Is has autonomic innervations
o d. It is affected by hormones
O e. It is protected by surrounding tissues
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Transcribed Image Text:6T Sinuatrial node (SA) is the pacemaker of the heart because: O a. It has the largest rate of activity out of O b. It has the largest resting membrane potential O c. Is has autonomic innervations o d. It is affected by hormones O e. It is protected by surrounding tissues Next page us page
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