MICROANATOMY

Detailed explanation-1: -Smooth muscle is found 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 is found throughout the urinary system where it functions to help rid the body of toxins and works in electrolyte balance.

Detailed explanation-2: -The main function of smooth muscle of the GI tract is to mix and propel intraluminal contents to enable efficient digestion of food, progressive absorption of nutrients, and evacuation of residues.

Detailed explanation-3: -Phasic or tonic. Smooth muscle may contract phasically with rapid contraction and relaxation, or tonically with slow and sustained contraction. The reproductive, digestive, respiratory, and urinary tracts, skin, eye, and vasculature all contain this tonic muscle type.

Detailed explanation-4: -The abdominal muscles are located between the ribs and the pelvis on the front of the body.

Detailed explanation-5: -Layers of Stomach Wall The three layers of smooth muscle consist of the outer longitudinal, the middle circular, and the inner oblique muscles. Construction of these muscles helps mix and break the contents into a suspension of nutrients called chyme and propels it into the duodenum.