Number the following statements in the proper sequence to describe the contraction mechanism in a skeletal muscle cell ( select number from 1 to 12) Action potential (AP) arrive at axon terminal at neuromuscular junction (NMJ) [ Choose ] The muscle cell relaxes and lengthens [ Choose ] SR releases calcium and it binds to troponin [ Choose ] Myosin heads bind to actin and contraction begins [ Choose ] Ion permeability of sarcolemma changes and sodium begins entering muscle cell causing depolarization Calcium flows into presynaptic terminal to initiate neurotransmitter release [ Choose ] AP travels across the entire sarcolemma [ Choose ] Ach is released and binds to receptors on the sarcolemma [ Choose ] Local depolarization (end plate potential) ignites AP in sarcolemma [ Choose ] Troponin moves tropomyosin out of the way of myosin binding sites on actin [ Choose ] AP travels along T tubules [ Choose ] Cross bridge cycling continues until ATP runs out and/or calcium is reuptaken into the SR
Number the following statements in the proper sequence to describe the contraction mechanism in a skeletal muscle cell ( select number from 1 to 12) Action potential (AP) arrive at axon terminal at neuromuscular junction (NMJ) [ Choose ] The muscle cell relaxes and lengthens [ Choose ] SR releases calcium and it binds to troponin [ Choose ] Myosin heads bind to actin and contraction begins [ Choose ] Ion permeability of sarcolemma changes and sodium begins entering muscle cell causing depolarization Calcium flows into presynaptic terminal to initiate neurotransmitter release [ Choose ] AP travels across the entire sarcolemma [ Choose ] Ach is released and binds to receptors on the sarcolemma [ Choose ] Local depolarization (end plate potential) ignites AP in sarcolemma [ Choose ] Troponin moves tropomyosin out of the way of myosin binding sites on actin [ Choose ] AP travels along T tubules [ Choose ] Cross bridge cycling continues until ATP runs out and/or calcium is reuptaken into the SR
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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Number the following statements in the proper sequence to describe the contraction mechanism in a skeletal muscle cell ( select number from 1 to 12)
Action potential (AP) arrive at axon terminal at neuromuscular junction (NMJ)
[ Choose ]
The muscle cell relaxes and lengthens
[ Choose ]
SR releases calcium and it binds to troponin
[ Choose ]
Myosin heads bind to actin and contraction begins
[ Choose ]
Ion permeability of sarcolemma changes and sodium begins entering muscle cell causing depolarization
Calcium flows into presynaptic terminal to initiate neurotransmitter release
[ Choose ]
AP travels across the entire sarcolemma
[ Choose ]
Ach is released and binds to receptors on the sarcolemma
[ Choose ]
Local depolarization (end plate potential) ignites AP in sarcolemma
[ Choose ]
Troponin moves tropomyosin out of the way of myosin binding sites on actin
[ Choose ]
AP travels along T tubules
[ Choose ]
Cross bridge cycling continues until ATP runs out and/or calcium is reuptaken into the SR
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