When a muscle fiber receives an action potential from a neuron, how many sarcomeres in the fiber contract?
A) All of the sarcomeres in the fiber contract.
B) The number that contracts is inversely proportional to the strength of the action potential.
C) The number that contracts is directly proportional to the strength of the action potential.
D) Approximately one half of the sarcomeres in the fiber contract.
Correct Answer:
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Q3: Skeletal muscle
A) contracts the large blood vessels.
B)
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Q9: Protein bands that connect sarcomeres are called
A)
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