tunica intima


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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.

tu·ni·ca in·ti·ma

[TA]
the innermost coat of a blood or lymphatic vessel; it consists of endothelium, usually a thin fibroelastic subendothelial layer, and an inner elastic membrane or longitudinal fibers.

tu·ni·ca in·ti·ma

(tū'ni-kă in'ti-mă) [TA]
The innermost coat of a blood or lymphatic vessel; consists of endothelium, usually a thin fibroelastic subendothelial layer, and an inner elastic membrane of longitudinal fibers.

tu·ni·ca in·ti·ma

(tū'ni-kă in'ti-mă) [TA]
The innermost coat of a blood or lymphatic vessel; consists of endothelium, usually a thin fibroelastic subendothelial layer, and an inner elastic membrane of longitudinal fibers.
References in periodicals archive ?
From the histological point of view, vascular calcification represents a complicated, multifactor disease that can be classified as tunica intima calcium deposition (atherosclerotic calcification) or tunica media calcification (Monckenberg's sclerosis).
As mentioned previously, the thickness and components of the media between the tunica intima and adventitia depend on the artery type.
In foetuses of 99-148 days, the aorta showed well developed and fully differentiated tunica intima, media and adventitia (Fig.5D).There was further increase in the amount of elastic fibers which became wavier in appearance and more densely packed.
In these individuals, hepatocytes with pyknotic nuclei, invasion of blood cells, rectilineated vessels and cell cords were also observed and in two individuals the occurrence of small fibromas developing next to blood vessels or inside the tunica intima of the vessels was noticed.
Stages 1-5 are characterized by the progressive accumulation of macrophage foam cells and lipid in the tunica intima, which ultimately develops into a fibroatheromatous plaque containing a lipid core composed of extracellular lipid and a fibrous cap associated with disorganization and deformation of the arterial wall.
Thickening of the tunica intima, disruption of the smooth muscle cells in the tunica media and branching and 'splitting' of elastic fibres with deposits of collagen in the region between the two layers can be seen in Fig.
CIMT is the vertical distance from the tunica intima to the interface between the tunica media and adventitia.
The mean thickness of tunica intima of RCA was noted to be 0.230 +-0.044 mm; tunica media measured 0.205 +-0.031 mm whereas tunica adventitia was 0.172 +-0.023 mm thick.
The MCA is a muscular artery and muscular arteries generally have the same basic composition as elastic arteries but the elastic tissue is reduced to a well-defined, fenestrated elastic sheet, the internal elastic lamina, in the tunica intima, and a diffuse external elastic lamina in the tunica adventitia.
Conventionally, cells in the large arteries, whose wall are composed of three layers including tunica intima, tunica media and tunica adventitia, are mainly comprised of endothelial cells, smooth muscle cells (SMCs), fibroblasts (FBs), and macrophages.
The tunica media was defined as the region between the internal and external elastic laminae, the tunica intima was defined as the region between the endothelium and the internal elastic laminae.