unit 6 Flashcards

1
Q
A

mitchodria

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2
Q

mitchodria

A
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3
Q

synaptic cledft

A
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4
Q
A

synaptic cleft

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5
Q

sliding filament theory?

A

actin slides past myosin and increases overlap thi makes th emsucle fiber shorten

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6
Q

what shortens during sliding filamen ttheory?

A

i band, distanc ebetween z lines , h zone disaperas

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7
Q

muscle fiber contracts bc of?

A

nerve impulse

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8
Q

neurotrasmitter junction?

A

where axopn tewrminal of neuron meets muscle fiber

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9
Q

axon terminal?

A

distal end of motor neurons axon terminal branch

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10
Q

motor neuron axon terminal has?

A

calcium channels

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11
Q

synaptic cleft ?

A

space between axonm terminal and muscle fivber

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12
Q

motor end plate?

A

portion of sarcolema that forms NMJ

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13
Q

before muscle contraction, ??? goes down the motor neuiron ???, then the nerve impulse arrives at the ???, then calcium channels open and calcium is ???, then ach goes across ???, then ach binds to ???

A

acytion potential , axon , axon terminal , taken in , synaptic cleft, receptors

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14
Q

during excitation contraction, ??? binds to receptors and ??? starts, then ??? and k are taken in, then ??? goes across sarcolema and ??? is released, then ca binds to ???

A

ach , depolorization , na, action potential, ca , troponin

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15
Q

during contraction, ??? form cross bridges and myosin heads engage in a ???, then acltin slides across ???, then myosin head ???

A

myosin heads , power storke, myosin, detachges

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