contracting a muscle Flashcards

1
Q

activate motor neuron->

A

impulse

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2
Q
  1. Release Ach from motor
A

binds to receptor at neurotransmitter junction (on the muscle)

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3
Q
  1. Generate A.P(impulse) in the
A

skeletal muscle

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4
Q

4.travels across the

A

sarcolemma and t tubules

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5
Q
  1. release calcium from sarcoplasmic reticulum into the
A

sarcoplasm

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6
Q
  1. Calcium binds to troponin
A

changes shape

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7
Q

7.slide tropmyosin over

A

express active site on actin

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8
Q

8.myosin heads are attached and bind to the

A

active sites on actin

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9
Q
  1. then myosin pulls actin over it
A

power stroke

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10
Q

10.ATP causes myosin head to be released from

A

actin and reset

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11
Q
  1. sarcomere shortens
A

force is generated

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12
Q

troponin

A

holds tropmysoin in place

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13
Q

trpomyosin

A

block active site

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