Answer
Organization of smooth muscles:
1. Smooth muscle does not form organs per se.
2. It is usually found as layers in the walls of organs and structures such as the stomach,ureters, intestines, urinary bladder
Complexity:
a. just single cells in arterioles
b. thick outer longitudinal layer and
deep inner circular layer-- in small intestine and esophagus
Contraction of longitudinal layer shortens and dilates the organ; contraction of cirularlayer constricts and lengthens the organ
Work Step by Step
In the stomach , urinary bladder and uterus there are three layers-- longitudinal, circular and oblique layers plus hundreds of myocytes running in many directions.
