Action potential propagates along the sarcolemma and down the T-tubules to activate __________ leading to Ca2+ release via __________ from the terminal cisternae. a. ligand-sensitive T-tubule proteins; calcium release channels b. voltage-sensitive T-tubule proteins; calcium release channels c. voltage-sensitive T-tubule proteins; calcium resorbing channels d. all of the above e. none of the above During cross-bridge cycling, the __________ cocks the myosin head into high-energy state. a. ATP attachment b. ATP hydrolysis c. ATP synthesis d. a and b e. b and c
Action potential propagates along the sarcolemma and down the T-tubules to activate __________ leading to Ca2+ release via __________ from the terminal cisternae. a. ligand-sensitive T-tubule proteins; calcium release channels b. voltage-sensitive T-tubule proteins; calcium release channels c. voltage-sensitive T-tubule proteins; calcium resorbing channels d. all of the above e. none of the above During cross-bridge cycling, the __________ cocks the myosin head into high-energy state. a. ATP attachment b. ATP hydrolysis c. ATP synthesis d. a and b e. b and c
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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Action potential propagates along the sarcolemma and down the T-tubules to activate __________ leading to Ca2+ release via __________ from the terminal cisternae.
a. ligand-sensitive T-tubule proteins; calcium release channels
b. voltage-sensitive T-tubule proteins; calcium release channels
c. voltage-sensitive T-tubule proteins; calcium resorbing channels
d. all of the above
e. none of the above
During cross-bridge cycling, the __________ cocks the myosin head into high-energy state.
a. ATP attachment
b. ATP hydrolysis
c. ATP synthesis
d. a and b
e. b and c
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