Question

How do muscle cells change their shape?

Answer 1

Muscle cells have special proteins that change their shape and arrangement in the cell in response to electrical impulse. This forces the muscle cells to contract and relax, causing their movement.

Answer 2

Answer:

Neurotransmitters are chemical messengers that transmit a message from a nerve cell across the synapse to a target cell. The target can be another nerve cell, or a muscle cell, or a gland cell. They are chemicals made by the nerve cell specifically to transmit the message.[1]