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 [too´nĭ-kah] (L.)
a tunic or coat; used in anatomic nomenclature to designate a membranous covering of an organ or a distinct layer of the wall of a hollow structure, as a blood vessel.
tunica adventi´tia the outer coat of various tubular structures.
tunica albugi´nea a dense white fibrous sheath that encloses a part or organ, such as the testicle or ovary.
tunica conjuncti´va the conjunctiva.
tunica dar´tos dartos.
tunica exter´na an outer coat, such as the fibroelastic coat of a blood vessel.
tunica inter´na an inner coat or layer.
tunica in´tima the innermost coat of a blood vessel; called also Bichat's tunic.
tunica me´dia the muscular middle coat of a blood vessel.
tunica muco´sa the mucous membrane lining of various tubular structures.
tunica muscula´ris the muscular coat or layer surrounding the tela submucosa in most portions of the digestive, respiratory, urinary, and genital tracts.
tunica pro´pria the proper coat or layer of a part, as distinguished from an investing membrane.
tunica sero´sa the membrane lining the external walls of the body cavities and reflected over the surfaces of protruding organs; it secretes a watery exudate.
tunica vagina´lis tes´tis the serous membrane covering the front and sides of the testis and epididymis.
tunica vasculo´sa a vascular coat, or a layer well supplied with blood vessels.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

dar·tos fas·ci·a

a superficial fascial layer incorporating smooth muscular tissue in the integument of the scrotum; it also forms the scrotal septum.
See also: dartos muliebris, dartos muscle.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Snodgrass hypospadias repair with vascularized dartos flap: the perfect repair for virgin cases of hypospadias J Urol 2002:168;1723-6.
The testis is separated from the sac sac is transfixed as high as possible and the testis is fixed in the dartos pouch.
This neourethra was then covered with a vascularised dartos flap harvested from subcutaneous tissue of dorsal prepucial skin.
The dartos muscle was closed with interrupted 0 vicryl and the skin with haemostatic 2/0 vicryl rapide mattress sutures.
The resection margin can be divided in 3 important areas that need to be analyzed: the skin of the shaft with underlying dartos and penile fascia; corpora cavernosa with albuginea; and urethra with periurethral cylinder that includes lamina propria, corpus spongiosum, albuginea, and penile fascia (Figure 1).
* Tunica Dartos. Este musculo liso que se encuentra debajo del escroto e intimamente relacionado con las tunicas vaginales parietal y visceral, permite la difusion de temperatura hacia el exterior contribuyendo a la termorregulacion.
The inner layer of the scrotal skin is adhered to the tunica dartos, a fibrous layer of smooth muscle.
En humanos y primates este plano muscular involuciona concomitantemente con la mayor movilidad que adquiere el miembro superior, lo que reduce su importancia funcional (Bergman et al., 2006), persistiendo como una estructura anatomicamente evidente solo a nivel del musculo dartos (Besana-Ciani & Greenall, 2005).
The flap margins are sharply incised through the dermis and the pedicle is mobilized from the Dartos fascia.
In contrast, Lord's plication technique which does not require dissection of the hydrocele sac from the dartos layer had a 10% rate of postoperative oedema.
A longitudinal penile skin incision was used to access the urethra, which was then mobilized with careful dissection through the dartos and Buck's fascia.