What triggers a skeletal muscle to contract?
Anatomy Final Exam Review

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Science
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12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The release of acetylcholine triggers a skeletal muscle to contract.
2.
FLASHCARD QUESTION
Front
What binds to receptors on the sarcolemma during the neuromuscular junction process?
Back
Acetylcholine (ACh) binds to receptors on the sarcolemma.
3.
FLASHCARD QUESTION
Front
Which myofilament is attached to the Z line?
Back
Actin is the myofilament attached to the Z line.
4.
FLASHCARD QUESTION
Front
What happens to the A band during the contraction of a sarcomere?
Back
The A band remains the same length during the contraction of a sarcomere.
5.
FLASHCARD QUESTION
Front
When a sarcomere contracts, where does actin move?
Back
Actin moves closer to the M line when a sarcomere contracts.
6.
FLASHCARD QUESTION
Front
What is the role of calcium ions (Ca2+) in muscle contraction?
Back
Calcium ions (Ca2+) play a crucial role in muscle contraction by binding to proteins that facilitate the interaction between actin and myosin.
7.
FLASHCARD QUESTION
Front
Define the term 'sarcomere'.
Back
A sarcomere is the basic contractile unit of muscle tissue, defined as the segment between two Z lines.
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