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CSCS Exam Questions with complete solution
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CSCS Exam Questions with complete solution Muscle Anatomy - correct answer muscle belly, fascicle, muscle fiber, myofilaments Muscle connective tissues - correct answer Tendon, epimysium, perimysium, endomysium Motor Unit - correct answer 1 alpha motor neuron and all the muscle fibe...

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  • December 2, 2024
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  • 2024/2025
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  • cscs exam questions with complete solution

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CSCS Exam Questions with complete
solution
Muscle Anatomy - correct answer ✔muscle belly, fascicle, muscle fiber,
myofilaments


Muscle connective tissues - correct answer ✔Tendon, epimysium,
perimysium, endomysium


Motor Unit - correct answer ✔1 alpha motor neuron and all the muscle fibers
it innervates


neuromuscular junction - correct answer ✔the junction between a motor
neuron and one muscle fiber


Sarcolemma - correct answer ✔muscle cell membrane


Ca++ - correct answer ✔main ion that controls muscle contraction


A-band - correct answer ✔dark area; extends length of the thick filaments


I-band - correct answer ✔thin filaments only


H-zone - correct answer ✔The region at the center of an A band of a
sarcomere that is made up of myosin only. The H zone gets shorter (and may
disappear) during muscle contraction.


Sarcomere - correct answer ✔contractile unit of a muscle fiber

, Actin - correct answer ✔thin filaments with troponin and tropomyosin


Myosin - correct answer ✔thick filament


All or None principle - correct answer ✔all fibers within a motor unit contract
and develop force at the same time


Muscle twitch - correct answer ✔the response of a muscle to a single brief
threshold stimulus


Muscle tetany - correct answer ✔The summation of many muscle fiber
twitches.


Sliding filament: resting phase - correct answer ✔no tension in the muscle


Sliding filament: excitation-contraction phase - correct answer ✔SR releases
CA2+, binds to troponin, causing shift in tropomyosin; force production is
directly related to # of cross bridges formed


Sliding filament: contraction phase - correct answer ✔energy for cross bridge
formation comes from hydrolysis of ATP to ADP+Pi; another ATP must attach
to myosin head for it to detach from actin and recock; H-zone shrinks, I-zone
shrinks


Sliding filament: recharge phase - correct answer ✔as long as Ca++ and
ATP are present contraction is repeated

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