GENERAL HISTOLOGY

Detailed explanation-1: -The single-unit visceral muscle is a specific type of smooth muscle and all the muscle fibers are associated together. This helps the muscle to function as a single unit. This means that the action potential is carried to all the muscles from one muscle cell where the neurotransmitters are drained.

Detailed explanation-2: –Cardiac muscle is composed of irregular branched cells bound together longitudinally by intercalated discs and shows strong, involuntary contractions.-Smooth muscle cells are fusiform in shape meaning that they are wide in the middle with tapered ends, they also have only a single nucleus.