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nodal delay a. maintains cardiac output by allowing enough ventricular filling. b. prevents excessive stimulation of ventricles. c. is due to the fact that fibers that make up AV node are smaller in diameter. (a allows ventricular repolarization. c. Only (a), (b) and (c) are correct.

nodal delay a. maintains cardiac output by allowing enough ventricular filling. b. prevents excessive stimulation of ventricles. c. is due to the fact that fibers that make up AV node are smaller in diameter. (a allows ventricular repolarization. c. Only (a), (b) and (c) are correct.

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
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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are correct. 33. AV nodal delay a. maintains cardiac output by allowing enough ventricular filling. b. prevents excessive stimulation of ventricles. c. is due to the fact that fibers that make up AV node are smaller in diameter. a allows ventricular repolarization. c. Only (a), (b) and (c) are correct. 34. Which of the following about action potential in autorhytmic cells is INCORRECT? Resting membrane potential does not remain stable. b. Repolarization phase is due to opening of K+ channels. Depolarization phase is due opening of Na+ channels. d. a. с. Resting membrane potential is more positive compared to cardiac muscle fibers None of the above is INCORRECT. е.
Transcribed Image Text:are correct. 33. AV nodal delay a. maintains cardiac output by allowing enough ventricular filling. b. prevents excessive stimulation of ventricles. c. is due to the fact that fibers that make up AV node are smaller in diameter. a allows ventricular repolarization. c. Only (a), (b) and (c) are correct. 34. Which of the following about action potential in autorhytmic cells is INCORRECT? Resting membrane potential does not remain stable. b. Repolarization phase is due to opening of K+ channels. Depolarization phase is due opening of Na+ channels. d. a. с. Resting membrane potential is more positive compared to cardiac muscle fibers None of the above is INCORRECT. е.
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