Tunica Anatomy

It consists of approximately 5 elastin with the remainder mostly consisting of collagen. Testes surrounded by a capsule the tunica albuginea.

Human Digestive System Esophagus Britannica

In animal reproductive system.

Tunica anatomy. The outermost coat or tunica adventitia is a tough layer consisting mainly of collagen fibres that act as a supportive element. Tunica vaginalis testis the serous membrane covering the front and sides of the testis and epididymis. The tubule walls consist of a multilayered germinal epithelium containing spermatogenic cells and sertoli cells nutritive cells that have the heads of maturing sperm embedded in them.

The tunica albuginea is the fibrous covering of the testis. Seminiferous tubules may constitute up to 90 percent of the testis. It is a dense blue grey membrane composed of bundles of white fibrous connective tissue from which it derives its name albuginea which interlace in every direction.

It is a bi layered structure that includes an outer longitudinal layer and an inner circular layer. It lies between the tunica intima on the inside and the tunica externa on the outside. The tunica media or middle coat is made up principally of smooth involuntary muscle cells and elastic fibres.

It is one of the mechanisms for retraction of the testes largely for temperature control. The middle coat tunica media is distinguished from the inner tunica intima by its color and by the transverse arrangement of its fibers. In artery the innermost layer or tunica intima consists of a lining a fine network of connective tissue and a layer of elastic fibres bound together in a membrane pierced with many openings.

Tunica dartos is a muscular tunic beneath the skin of the scrotum. The large other articles where tunica media is discussed. The tunica media or middle coat is made up principally of smooth involuntary muscle cells and elastic fibres arranged in roughly spiral layers.

The fibrous sheath of the corpora cavernosa penis the fibrous tunic of the testis and the connective tissue tunic around the ovaries. Tunica serosa the membrane lining the external walls of the body cavities and reflected over the surfaces of protruding organs. The tunica vaginalis is the pouch of serous membrane that covers the testes.

The tunica albuginea is the fibrous envelope of the corpora cavernosa penis and corpus spongiosum penis. Tunica media is made up of smooth muscle cells elastic tissue and collagen. Tunica vaginalis anatomy this serous pouch comprises of two layers of serous membranes that cover the tunica vaginalis albuginea a layer of the fibrous substance that enwraps the testes.

Tunica albuginea is a general term for a tunic of whitish connective tissue. It secretes a watery exudate. In human anatomy it generally is applied in three contexts.

It extends 1 cm into the spermatic cord. It is derived from the vaginal process of the peritoneum which in the fetus precedes the descent of the testes from the abdomen into the scrotum.

Hsci 4590 Histology Of Blood Vessel Wall