Podcast
Questions and Answers
What triggers the release of calcium ion from the nearby sarcoplasmic reticulum?
What triggers the release of calcium ion from the nearby sarcoplasmic reticulum?
- Change in potential of the membrane of the T tubule (correct)
- End plate potential at the neuromuscular junction
- Action potential in the motor neuron
- Presence of Ca++ pumps
What is the role of acetylcholine in muscle contraction?
What is the role of acetylcholine in muscle contraction?
- Causes action potential in the muscle cell
- Triggers the release of calcium ion from the sarcoplasmic reticulum
- Initiates the crossbridge cycle
- Attaches to receptors in the motor end plate (correct)
Which component is responsible for initiating the crossbridge cycle in muscle contraction?
Which component is responsible for initiating the crossbridge cycle in muscle contraction?
- Tropomyosin
- Calcium ion (correct)
- Acetylcholine
- Troponin
What is the function of the dihydropyridine receptor in muscle contraction?
What is the function of the dihydropyridine receptor in muscle contraction?
Which structure is known as a ryanodine receptor in muscle contraction?
Which structure is known as a ryanodine receptor in muscle contraction?
What is the effect of an action potential in the motor neuron on a muscle fiber?
What is the effect of an action potential in the motor neuron on a muscle fiber?
What does the presence of Ca++ pumps in the sarcoplasmic reticulum contribute to?
What does the presence of Ca++ pumps in the sarcoplasmic reticulum contribute to?
What follows an end plate potential at the neuromuscular junction?
What follows an end plate potential at the neuromuscular junction?
What is released at the neuromuscular junction following an action potential in the motor neuron?
What is released at the neuromuscular junction following an action potential in the motor neuron?
Flashcards
What triggers calcium release?
What triggers calcium release?
Change in potential of the membrane of the T tubule
Acetylcholine's muscle role?
Acetylcholine's muscle role?
Attaches to receptors in the motor end plate, initiating depolarization
Crossbridge cycle initiator?
Crossbridge cycle initiator?
Calcium ion
Dihydropyridine receptor function?
Dihydropyridine receptor function?
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Ryanodine receptor location?
Ryanodine receptor location?
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Motor neuron action potential effect?
Motor neuron action potential effect?
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Ca++ pumps contribution?
Ca++ pumps contribution?
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Follows end plate potential?
Follows end plate potential?
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Released at neuromuscular junction?
Released at neuromuscular junction?
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