Which of the following serves as an actuating signal or as, Ask an Expert

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Which of the following serves as an actuating signal, or as part of an actuating signal, in a negative feedback system?

A. Action potentials in diaphragm skeletal muscle fibers.

B. Action potentials in motor neurons whose axon terminals synapse on diaphragm skeletal muscle fibers.

C. Action potentials in rib cage smooth muscle fibers.

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Category:- Biology
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