tunica vaginalis

Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

tunica vaginalis

The serous membrane surrounding the front and sides of the testicle. It is the thin, flattened remnant of a pouch of peritoneum pulled into the scrotum by the testis as it descends during fetal development.
See also: 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.

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
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.
References in periodicals archive ?
It most commonly affects the tunica vaginalis, and may occur as a single or multiple nodules.
Tunical fibromas are benign, painless tumors that arise most frequently from the tunica vaginalis, but they can arise from the tunica albuginea, the spermatic cord, or even the testicular parenchyma in rare cases.
Following this, the patient underwent an excisional biopsy for what appeared to be a primary mesothelioma of the tunica vaginalis.
The tunica vaginalis is usually thickened, with tumor coating it, or it is studded with nodules of varying size.
Hydrocele and cholesterol granuloma of the tunica vaginalis simulating a tumor in echography.
A conservative excision was also performed in the aforementioned case from the tunica vaginalis, in which the patient was disease free at 30 months following surgery.
2,4) A small amount of fluid between the leaves of the tunica vaginalis is seen in most normal patients.
Tunica vaginalis flap was used in 23 of 38 patients who underwent VPL, while grafts (dural-4, dermal-3, bovine perocardium-7, and porcine collagen-1) were employed in the remaining 15 children (Fig.
Tunica vaginalis blanket wrap to prevent urethrocutaneous fistula: An 8-year experience.
Intra-operatively, we found a circumscribed, firm paratesticular mass, which was adherent to the tunica vaginalis.
Malignant mesothelioma is most commonly found in the pleura, peritoneum and pericardium, while mesothelioma involving the tunica vaginalis testis is very rare.
Gross examination of the testicle demonstrated extensive adhesions of the external surface with a fixed parietal and visceral tunica vaginalis (Fig.