Q1. Phosphocreatine Select one: a) provides the muscle cell with a quick energy source b) removes Ach from...

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Medical Sciences

Q1. Phosphocreatine
Select one:
a) provides the muscle cell with a quick energy source
b) removes Ach from the neuromuscular junction
c) blocks the myosin binding site in a relaxed muscle
d) responsible for the release of Ach
e) pumps Ca2+ back into the sarcoplasmic reticulum
Q2. In twitch summation,
Select one:
a) the muscle fiber is stimulated again before the filaments havecompletely returned to their resting position
b) stronger muscle contractions occur but stronger actionpotentials do not uoccur
c) a second action potential occurs in the muscle fiber, before thefirst action potential is finished
d) both a and b are correct
e) all of the above are correct
Q3. The force generated by a single musclefiber:
Select one:
a) is always the same
b) can be increased by increasing the frequency of actionpotentials
c) can be increased by motor unit recruitment
d) more than one of the above is correct

Answer & Explanation Solved by verified expert

4.2 Ratings (806 Votes)

1Phosphocreatine Option A ie provides the muscle cell with a quick energy source Phosphocreatine is a molecule that has the ability to store energy in its phosphate bonds When the muscle is in See Answer

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