MICROANATOMY

Detailed explanation-1: -Smooth muscle is present throughout the body, where it serves a variety of functions. It is in the stomach and intestines, where it helps with digestion and nutrient collection. It exists throughout the urinary system, where it functions to help rid the body of toxins and works in electrolyte balance.

Detailed explanation-2: -Layers of the Small Intestine Muscularis: The muscularis consists of two smooth muscle layers, a thin outer longitudinal layer that shortens and elongates the gut, and a thicker inner circular layer of smooth muscle, which causes constriction.

Detailed explanation-3: -The wall of the small intestine contains two orthogonal layers of smooth muscle .

Detailed explanation-4: -Smooth muscle, found in the walls of the hollow internal organs such as blood vessels, the gastrointestinal tract, bladder, and uterus, is under control of the autonomic nervous system. Smooth muscle cannot be controlled consciously and thus acts involuntarily.

Detailed explanation-5: -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.