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The epididymis is present in male reptiles, birds, mammals, and cartilaginous fish. [1] The caput epididymidis is fused to the testis in eutherian mammals, but not in marsupials. [13] In reptiles, there is an additional canal between the testis and the head of the epididymis and which receives the various efferent ducts.
The human vas deferens measures 30–35 cm in length, and 2–3 mm in diameter. [3]: 1297 It is continuous proximally with the tail of the epididymis, [3]: 1296 and exhibits a tortuous, convoluted initial/proximal section (which measures 2–3 cm in length).
2 Location in humans. 3 Duration. 4 ... Maturation occurs in the epididymis. The location ... are 20–100 or 50–200 times higher than the concentration found in ...
The epididymis is a long whitish mass of tightly coiled tube. The sperm that are produced in the seminiferous tubules flow into the epididymis. During passage via the epididymis, the sperm undergo maturation and are concentrated by the action of ion channels located on the apical membrane of the epididymis. [2]
Epididymitis is a painful inflammation of the epididymis or epididymides, frequently caused by bacterial infection but sometimes of unknown origin. Anorchia is the absence of one or both testicles. Cryptorchidism , or "undescended testicles", is when the testicle does not descend into the scrotum of an infant boy.
Testis in the place of its original formation; t', together with the dotted lines above, indicates the direction in which the testis and epididymis descend from the abdomen into the scrotum. Skene's glands a.k.a. paraurethral gland: pr. Prostate: u. Uterus. The uterine tube of the right side is marked m. va. Vagina: vh. Ductus aberrans: vs ...
In most terrestrial mammals, the scrotum (pl.: scrotums or scrota; possibly from Latin scortum, meaning "hide" or "skin") [1] [2] or scrotal sac is a part of the external male genitalia located at the base of the penis. It consists of a sac of skin containing the external spermatic fascia, testicles, epididymides, and vasa deferentia. The ...
A large part of the head end of the mesonephros atrophies and disappears; of the remainder the anterior tubules form the efferent ducts of the testicle; while the posterior tubules are represented by the ductuli aberrantes, and by the paradidymis, which is sometimes found in front of the spermatic cord above the head of the epididymis.