Chapter 10.10, Problem 39WDL

Summary Introduction

To explain:

The reason that the smooth muscle of the eye is multiunit smooth muscle and the smooth muscle in the wall of digestive organs is single unit smooth muscle.

Concept introduction:

Smooth muscle is classified into two groups based on whether the smooth muscle fibers are either stimulated to contract as one unit or independently. Multicellular smooth muscle cells receive stimulation to contract independently whereas contraction in the single unit smooth muscle cells is in a syncytium.