| tunica albuginea of testis | <anatomy> A thick white layer of fibrous membrane forming the outer coat of the testis. Synonym: tunica albuginea testis, perididymis. (05 Mar 2000) |
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| tunica albuginea testis | <anatomy> A thick white layer of fibrous membrane forming the outer coat of the testis. Synonym: tunica albuginea testis, perididymis. (05 Mar 2000) |
| tunica carnea | A layer of smooth muscular tissue in the integument of the scrotum. See: dartos muliebris. Synonym: tunica dartos, dartos muscle, membrana carnosa, tunica carnea. (05 Mar 2000) |
| tunica conjunctiva | A clear membrane that coats the inner aspect of the eyelids and the outer surface of the eye. (27 Sep 1997) |
| tunica conjunctiva bulbi | The part of the conjunctiva covering the anterior surface of the sclera and the surface epithelium of the cornea. Synonym: tunica conjunctiva bulbi, conjunctival layer of bulb. (05 Mar 2000) |
| tunica conjunctiva palpebrarum | The part of the conjunctiva lining the posterior surface of the eyelids and continuous with the bulbar conjunctiva at the conjunctival fornices. Synonym: tunica conjunctiva palpebrarum, conjunctival layer of eyelids. (05 Mar 2000) |
| tunica dartos | A layer of smooth muscular tissue in the integument of the scrotum. See: dartos muliebris. Synonym: tunica dartos, dartos muscle, membrana carnosa, tunica carnea. (05 Mar 2000) |
| tunica elastica | <anatomy> Tunica media of large arteries. (05 Mar 2000) |
| tunica externa | <anatomy> The outer of two or more enveloping layers of any structure, specifically, the outer fibroelastic coat of a blood or lymph vessel. Synonym: tunica extima. (05 Mar 2000) |
| tunica externa oculi | The outer layer of the eyeball composed of the sclera and cornea. Synonym: tunica fibrosa bulbi, tunica externa oculi. (05 Mar 2000) |
| tunica externa thecae folliculi | <embryology> The external fibrous layer of the theca of a well-developed vesicular ovarian follicle; the cells and fibres are arranged in a concentric fashion. Synonym: theca externa. (05 Mar 2000) |
| tunica extima | <anatomy> The outer of two or more enveloping layers of any structure, specifically, the outer fibroelastic coat of a blood or lymph vessel. Synonym: tunica extima. (05 Mar 2000) |
| tunica interna bulbi | Light sensitive layer of the eye. In vertebrates, looking from outside, there are four major cell layers: (i) the outer neural retina, which contains neurons (ganglion cells, amacrine cells, bipolar cells) as well as blood vessels, (ii) the photoreceptor layer, a single layer of rods and cones, (iii) the pigmented retinal epithelium (PRE or RPE), (iv) the choroid, composed of connective tissue, fibroblasts and including a well vascularised layer, the chorio capillaris, underlying the basal lamina of the PRE. Behind the choroid is the sclera, a thick organ capsule. In molluscs (especially cephalopods such as the squid) the retina has the light sensitive cells as the outer layer with the neural and supporting tissues below. See: retinal rods, retinal cones, rhodopsin. (18 Nov 1997) |
| tunica interna thecae folliculi | <embryology> The inner cellular and vascular layer of the vesicular ovarian follicle. There is evidence that the epithelioid cells produce oestrogen and contribute to the formation of the corpus luteum after ovulation. Synonym: theca interna. (05 Mar 2000) |
| tunica intima | <anatomy> The innermost coat of blood vessels, consisting of a thin lining of endothelial cells longitudinally oriented and continuous with the endothelium of capillaries on the one hand and the endocardium of the heart on the other. (12 Dec 1998) |