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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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jock52 jock52
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12 years ago
Place the following statements in the proper sequence to describe the contraction mechanism in a skeletal muscle cell.
Answer
Acetylcholine diffuses across the neuromuscular junction and binds to receptors on the sarcolemma.

The action potential, carried deep into the cell by the T tubules, triggers the release of calcium ions from the sarcoplasmic reticulum.

The calcium ion concentrations at the myofilaments increase; the myofilaments slide past one another, and the cell shortens.

The concentration of the calcium ions at the myofilaments decreases as they are actively transported into the sarcoplasmic reticulum.

The muscle cell relaxes and lengthens.

Acetylcholine is released into the neuromuscular junction by the axonal terminal.

Depolarization occurs, and the action potential is generated.
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#1
Staff Member
12 years ago
Thanks for posting this!
- Master of Science in Biology
- Bachelor of Science
jock52 Author
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#2
12 years ago
Sadly the items in this post are not in order.... That answer part should not be in there.

I am still looking for the proper sequence... Frowning Face
Answer accepted by topic starter
jock52 Authorjock52
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#3
Posts: 111
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12 years ago
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