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Questions and Answers
What is the role of acetylcholine (ACh) in muscle cell function?
What is the role of acetylcholine (ACh) in muscle cell function?
- It acts as a neurotransmitter to stimulate muscle cell contraction. (correct)
- It inhibits muscle contraction by blocking the release of calcium ions.
- It is responsible for maintaining the resting membrane potential in muscle cells.
- It helps in the breakdown of muscle tissue for energy production.
How do slow and fast twitch fibers differ in structure?
How do slow and fast twitch fibers differ in structure?
- Slow twitch fibers have a greater ability to generate force than fast twitch fibers.
- Fast twitch fibers have a higher capillary density than slow twitch fibers. (correct)
- Fast twitch fibers have more mitochondria than slow twitch fibers.
- Slow twitch fibers are larger in diameter compared to fast twitch fibers.
What is the main function of the resting membrane potential (RMP) in muscle cells?
What is the main function of the resting membrane potential (RMP) in muscle cells?
- To initiate the release of acetylcholine for muscle contraction.
- To trigger the breakdown of ATP for energy production.
- To maintain an electrical charge difference across the cell membrane. (correct)
- To prevent the entry of calcium ions into the cell.
What distinguishes small motor units from large motor units in terms of function?
What distinguishes small motor units from large motor units in terms of function?
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Why are multiple tissue types necessary in a whole skeletal muscle?
Why are multiple tissue types necessary in a whole skeletal muscle?
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What is the significance of endurance exercises on muscle tissue?
What is the significance of endurance exercises on muscle tissue?
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