Principles Of Physiology worksheets
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Where a nerve and muscle fiber come together is called a...
Synaptic Cleft
Neurotransmitter
Neuromuscular Junction
Action Potential
The neurotransmitter stored in the axon terminal identified as ...
Acetylcholine
Serotonin
Adrenaline
Dopamine
Where is calcium stored in the muscle cell?
T Tubules
Sarcoplasmic Reticulum (SR)
Sarcolemma
Sarcomere
When the action reaches the muscle cell, it travels down the....
Sarcolemma
T Tubules
Sarcoplasmic Reticulum
Calcium Channel
The action potential releases __________ from the Sarcoplasmic Reticulum (SR)
After calcium is released from the SR, it binds to _________
troponin
tropomyosin
actin
myosin
Troponin moves the ____________ uncovering binding sites.
actin
troponin
tropomyosin
myosin
A calcium deficiency would
create uncoordinated muscle contractions
allow muscle contraction, but not relaxation
prevent contraction by preventing myosin from binding to actin
have no effect on contraction
_______ binds to myosin head causing myosin to release actin.
ATP
ADP
Actin
Calcium
What would be the correct order of the steps?
- Action potential travels down T-tubules.
- Nerve impulse reaches the muscle.
- Calcium binds to troponin.
- Tropomyosin moves.
1, 2, 3, 4
4, 3, 2, 1
3, 4, 1, 2
2, 1, 3, 4
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