MUSCLE PHYSIOLOGY

Detailed explanation-1: -Throughout most of the gastrointestinal tract, smooth muscles are organized into two layers of circularly or longitudinally oriented muscle bundles. Smooth muscle cells form electrical and mechanical junctions between cells that facilitate coordination of contractions.

Detailed explanation-2: -The wall of the small intestine contains two orthogonal layers of smooth muscle .

Detailed explanation-3: -Gastrointestinal tract. Cardiovascular: Blood vessel and lymphatic vessels. Renal: Urinary bladder. Genital: Male and female reproductive tracts. Respiratory tract. Integument: erector pili of the skin. Sensory: Ciliary muscle and iris of the eye.