Tunica Albuginea (other)

	Tunica Albuginea (other) Tunica albuginea may refer to: Tunica albuginea (penis), the tough fibrous layer of connective tissue that surrounds the corpora cavernosa of the penis Tunica albuginea (testicles), a layer of connective tissue covering the testicles Tunica albuginea (ovaries), the connective tissue covering of the ovaries Sclera, Tunica albuginea oculi, the tough fibrous layer that covers most of the eyeball. See also * Tunica (biology) {{disambig Biology disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tunica Albuginea (penis) The tunica albuginea is the fibrous envelope that extends the length of the corpora cavernosa penis (containing erectile tissue) and corpus spongiosum penis (containing the male urethra). It is a bi-layered structure that includes an outer longitudinal layer and an inner circular layer. It consists of approximately 5% elastin, with the remainder mostly consisting of collagen. The tunica albuginea is directly involved in maintaining an erection; that is due to Buck's fascia constricting the erection veins of the penis, preventing blood from leaving and thus sustaining the erect state. The erection veins include the deep dorsal vein, two cavernosal veins, and four para-arterial veins. The trabeculae of the tunica albuginea are more delicate, nearly uniform in size, and the meshes between them smaller than in the corpora cavernosa penis: their long diameters, for the most part, corresponding with that of the penis. The external envelope or outer coat of the corpus spongiosum is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tunica Albuginea (testicles) The tunica albuginea is the fibrous tissue covering of the testis. It is a dense blue-grey membrane, composed of bundles of white fibrous connective tissue, from which it derives its name '' albuginea'', which interlace in every direction. Structure The tunica albuginea is a layer of fibrous tissue capsule covering the testis. It is covered by the tunica vaginalis, except at the points of attachment of the epididymis to the testis, and along its posterior border, where the spermatic vessels enter the gland. It is thicker than the tunica albuginea of the ovary. The tunica albuginea is applied to the tunica vasculosa over the glandular substance of the testis, and, at its posterior border, is reflected into the interior of the gland, forming an incomplete vertical septum, called the mediastinum testis (corpus Highmori). Additional images File:Gray1145.png, Transverse section through the left side of the scrotum and the left testis. File:Gray1114.png, Section of a genital ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tunica Albuginea (ovaries) The tunica albuginea is a layer of condensed fibrous tissue on the surface of the ovary. Structure The tunica albuginea is composed of short connective tissue fibers. It is located immediately inside the surface epithelium (previously known as '' germinal epithelium'') which is continuous with the peritoneum. It is Angiogenesis, non-vascularised. It is thinner than the Tunica albuginea of testis, tunica albuginea of the testis, and its thickness varies across the ovary The ovary is an organ in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube into the uterus, where it may become fertilized by a sperm. There is an ovary () found on each side of the body. .... Development The tunica albuginea is formed late in prenatal development. It buds off from mesonephric stroma. References External links * Mammal female reproductive system {{genitourinary-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Sclera The sclera, also known as the white of the eye or, in older literature, as the tunica albuginea oculi, is the opaque, fibrous, protective, outer layer of the human eye containing mainly collagen and some crucial elastic fiber. In humans, and some other vertebrates, the whole sclera is white, contrasting with the coloured iris, but in most mammals, the visible part of the sclera matches the colour of the iris, so the white part does not normally show while other vertebrates have distinct colors for both of them. In the development of the embryo, the sclera is derived from the neural crest. In children, it is thinner and shows some of the underlying pigment, appearing slightly blue. In the elderly, fatty deposits on the sclera can make it appear slightly yellow. People with dark skin can have naturally darkened sclerae, the result of melanin pigmentation. The human eye is relatively rare for having a pale sclera (relative to the iris). This makes it easier for one individual to ide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tunica (biology) In biology, a tunica (, ; ) is a layer, coat, sheath, or similar covering. The word came to English from the New Latin of science and medicine. Its literal sense is about the same as that of the word ''tunic'', with which it is cognate. In biology one of its senses used to be the taxonomic name of a genus of plants, but the nomenclature has been revised and those plants are now included in the genus ''Petrorhagia''. In modern biology in general, ''tunica'' occurs as a technical or anatomical term mainly in botany and zoology. It usually refers to membranous structures that line or cover particular organs. In many such contexts ''tunica'' is used interchangeably with ''tunic'' according to preference. An organ or organism that has a tunic(a) may be said to be ''tunicate'', as in a ''tunicate bulb''. This adjective ''tunicate'' is not to be confused with the noun ''tunicate'', which refers to a member of the subphylum '' Tunicata''. Botanical and related usages In botany there are s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]