tunica adventitia


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Related to tunica adventitia: tunica intima, tunica media, Tunica serosa

tunica

 [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.

ad·ven·ti·ti·a

(ad-ven-tish'ă), [TA]
The outermost connective tissue covering of any organ, vessel, or other structure (or part thereof) not covered by a serous coat (visceral peritoneum); instead, the covering is properly derived from without (that is, from the surrounding connective tissue) and does not form an integral part of such organ or structure. Terminologia Anatomica lists adventitia (tunica adventitia) of the following organs: blood vessels, ductus deferens, esophagus, renal pelvis, seminal glands, and ureters.
Synonym(s): tunica adventitia [TA], membrana adventitia (1)
[L. adventicius, coming from abroad, foreign, fr. ad, to + venio, to come]

tunica adventitia

the outer layer or coat of an artery or other tubular structure. See also arterial wall.

ad·ven·ti·ti·a

(ad'vĕn-tish'ă) [TA]
The outermost connective tissue covering of any organ, vessel, or other structure not covered by a serosa.
Synonym(s): tunica adventitia [TA] .
[L. adventicius, coming from abroad, foreign, fr. ad, to + venio, to come]

tunica adventitia

outermost layer of a blood vessel, derived from/continuous with surrounding connective tissue

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
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 ?
Telocytes were generally distributed in the whole connective tissue layer of tunica adventitia of the aortic arch.
Distinctive features of telocytes in tunica adventitia
The characteristics of TCs in tunica adventitia demonstrated that the cell bodies were relatively small (range from 6.
Cell communication between telocytes and other cells in tunica adventitia
Moreover, macrophages and FB coexisted with TCs in the same region of loose connective tissue of tunica adventitia [Figure 7], where a large amount of CFs survived, whereas, no direct connections appeared among them.
The present study indicated that TCs in tunica adventitia of mice aorta displayed the representative morphological properties defined by Popescu, and could form a three-dimensional meshwork through different Tps establishing direct contacts.
The tunica adventitia of the large artery is relatively thin connective tissue layer containing mainly CFs and a few elastic fibers.
com/ ), was usually located in tunica adventitia of aorta, not in tunica media, and no direct intercellular junctions were found between them and SMCs.
In our study, LAD at its origin presented a histological picture of that of an elastic artery, with tunica media being the thickest of all the three layers; tunica intima is relatively thick and tunica adventitia is relatively thin (Fig.
LCX at its origin has characteristics intermediate between elastic and muscular arteries; as a clue to its elastic nature, it has thickest tunica media and relatively thick tunica intima and behaves as a muscular artery due to having a relatively thicker tunica adventitia.