Smooth muscle is found throughout the body where it serves various functions. It is present in the stomach, intestines, urinary system, blood vessels, and other organs. Smooth muscle differs from skeletal muscle in that it can maintain tone for extended periods and often contracts involuntarily. The document lists several functions of smooth muscle in different body systems such as propelling food and regulating blood flow. Smooth muscle is an important muscle type found in the gastrointestinal tract, cardiovascular, renal, genital, respiratory, and integumentary systems that aids various bodily functions.

1. Smooth Muscle
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SARA BIBI
Program SLP
Subject Physiology

2.  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.
Introduction

3.  Smooth muscle differs from skeletal muscle in
function. Unlike skeletal muscle, smooth muscle is
capable of maintaining tone for extended periods and
often contracts involuntarily.
Smooth Muscle Structure

4.  Gastrointestinal tract: Propulsion of the food bolus
 Cardiovascular: Regulation of blood flow and pressure via
vascular resistance
 Renal: Regulation of urine flow
 Genital: Contractions during pregnancy, propulsion of
sperm
 Respiratory tract: Regulation of bronchiole diameter
 Integument: Raises hair with erector pili muscle
 Sensory: Dilation and constriction of the pupil as well as
changing lens shape
Smooth Muscle Function

5. Smooth muscle can be found in all the organ systems below:
 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
Muscles

6. Smooth Muscle

7. Smooth Muscle

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References