Answer:Each muscle in the body is made up of cells called muscle fibers. Muscle fibers are long, thin cells that can do something that other cells cannot do—they are able to get shorter.
Explanation:
IM not sure if this would help but their you go.
Ur answer is 70 %, please make this the brainliest
Answer:
(B) They Bind to receptor proteins on the surface of the postsynaptic neuron.
I Hope this helps!
