Multiple Choice
Vertebrate striated muscles composed of twitch fibers are able to produce a graded contraction by
A) recruiting different numbers of motor units.
B) summing EPSPs in the motor end-plate region.
C) having excitatory and inhibitory input to a single muscle.
D) Vertebrate muscles are unable to produce graded contractions.
Correct Answer:

Verified
Correct Answer:
Verified
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