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Types of Smooth Muscle

Gastrointestinal Tract
Gastrointestinal Tract

Gastrointestinal Motility and Smooth Muscle Early in life, children notice that strange gurgling sounds sporadically emanate from their "stomachs," particularly in periods between meals. This simple observation reflects the fact that the digestive tube is quite muscular and that muscle contractions and motility are integral parts of digestive function.

In the Aorta (Tunica Media Layer)
In the Aorta (Tunica Media Layer)

Tunica media is made up of smooth muscle cells and elastic tissue. It lies between the tunica intima on the inside and the tunica externa on the outside. The middle coat (tunica media) is distinguished from the inner (tunica intima) by its color and by the transverse arrangement of its fibers.

Intestines
Intestines

intestinal [in-tes´tĭ-nal] pertaining to the intestine. intestinal bypass a surgical procedure in which all but a short section of the proximal jejunum and terminal ileum is ...

Iris of the eye
Iris of the eye

The iris sphincter muscle (pupillary sphincter, pupillary constrictor, circular muscle of iris, circular fibers) is a muscle in the part of the eye called the iris. It encircles the pupil of the iris, appropriate to its function as a constrictor of the pupil.

Prostate
Prostate

In cetaceans the prostate gland is surrounded by a very powerful compressor muscle. The prostate gland originates with tissues in the urethral wall. This means the urethra, a compressible tube used for urination, runs through the middle of the prostate. This leads to an evolutionary design fault for some mammals, including human males.

image: ouhsc.edu
Ureters
Ureters

In human anatomy, the ureters are tubes made of smooth muscle fibers that propel urine from the kidneys to the urinary bladder. In the adult, the ureters are usually 25–30 cm (10–12 in) long and around 3–4 mm (0.12–0.16 in) in diameter.

Walls of Blood Vessels
Walls of Blood Vessels

Vascular smooth muscle refers to the particular type of smooth muscle found within, and composing the majority of the wall of blood vessels. Nerve supply. Vascular smooth muscle is innervated primarily by the sympathetic nervous system through adrenergic receptors (adrenoceptors).

Walls of Stomach
Walls of Stomach

Stomach: the Gastric Layers This gastric illustration depicts the three layers of smooth muscle which line the stomach wall. Smooth muscle in the stomach contracts during digestion, in order to break down nutrients.

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