Quiz 7 Flashcards Preview

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Flashcards in Quiz 7 Deck (10):
1

which of the following is greater

the concentration of calcium ion in the sarcoplasmic reticulum of a resting muscle

2

which of the following acts as an ATPase during the contraction cycle of a muscle

the head portion of the myosin muscle

3

which of the following become connected by myosin cross bridges during muscle contraction

thin filaments and thick filaments

4

when acytocholine binds to receptors at the motor end plate, the end plate membrane becomes

more permeable to sodium ions

5

how would the loss of acytocholincertase from the motor end plate affect skeletal muscle

it would cause spastic paralysis

6

triggering the muscle action potential occurs after

acytocholine binds to chemically gated channels in the motor end plate membrane

7

the cytoplasm of the neuromuscular synaptic terminal contains vesicles filled with molecules of the neuron

acytocholine

8

the action potential is conducted into a skeletal muscle fiber by

transverse tubules

9

in response to action potentials arriving along the transverse tubules, the sarcoplasmic reticulum releases

calcium ions

10

cross bridges are portions of

myosin molecules