tunica media (redirected from Middle coat)

tunica me·di·a (md-)

n.

The middle, usually muscular, coat of a blood or lymph vessel.

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tunica media,

a muscular middle coat of an artery. See also arterial wall.

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tunica media (too´nik mē´dē),

n the muscular middle layer of an artery.

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tunica

pl. tunicae [L.] a covering or coat; a membranous covering of an organ or a distinct layer of the wall of a hollow structure, as a blood vessel. See also tunic.

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tunica adventitia

the outer coat of various organs, blood vessels and other structures, usually made up of loose connective tissue.

tunica albuginea

a dense, white, fibrous sheath enclosing a part or organ, such as is present on the testis.

tunica albuginea ovarii

see tunica ovarii (below).

tunica conjunctiva

the conjunctiva.

tunica dartos

dartos.

tunica externa

an outer coat, especially the fibroelastic coat of a blood vessel.

tunica flava abdominis

an extensive sheet of elastic tissue that helps to support the abdomen. It is conspicuous in large animals as a yellow corset over the ventral abdomen and is a modified part of the deep fascia and aponeurosis of the external abdominal oblique muscle. It contributes to the deep fascia for the mammary gland or the scrotum.

tunica intima

the innermost coat of blood vessels; called also Bichat's tunic.

tunica media

the middle coat of blood vessels.

tunica mucosa

the mucous membrane lining of various tubular structures.

tunica muscularis

the muscular coat or layer surrounding the tela submucosa in most portions of the digestive, respiratory, urinary and genital tracts.

tunica ovarii

capsule of dense collagenous tissue, underlying the covering epithelium, covers each ovary. Called also tunica albuginea ovarii.

tunica propria

the proper coat or layer of a part, as distinguished from an investing membrane.

tunica serosa

the membrane lining the external walls of the body cavities and coating the surfaces of intruding organs; it secretes a watery exudate.

tunica vaginalis

the double-layered sleeve of peritoneum that lines the scrotum and inguinal canal (parietal layer) and invests the testis, epididymis and spermatic cord (visceral layer).

tunica vasculosa

a vascular coat, or a layer well supplied with blood vessels, e.g. of the eye.

tunica vasculosa lentis

vascular envelope of the lens in the developing fetus.