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The epididymis serves as an interconnection between the multiple efferent ducts at the rear of a testicle (proximally), and the vas deferens (distally). Its primary function is the storage, maturation and transport of sperm cells .
The initial segment of the epididymis, first described in the guinea pig epididymis, [10] is a histologically distinct region of tall pseudostratified columnar epithelium that receives spermatozoa from the ductuli efferentes (Figure 1). The epididymis is the primary sperm storage organ in male reptiles. [6]
The vas deferens has a dense sympathetic innervation, [16] making it a useful system for studying sympathetic nerve function and for studying drugs that modify neurotransmission. [7] It has been used: as a bioassay for the discovery of enkephalins, the endogenous opiates. [17] to demonstrate quantal transmission from sympathetic nerve terminals ...
The function of the blood–testis barrier may be to prevent an auto-immune reaction. [13] Mature sperm (and their antigens) emerge significantly after immune tolerance is set in infancy. [13] Since sperm are antigenically different from self-tissue, a male animal can react immunologically to his own sperm. The male can make antibodies against ...
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]
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 ...
The rete testis does modify the luminal fluids with a limited amount of secretion and reabsorption, but their primary function is to mix and transport the sperm into the efferent ductules, where the major function is reabsorption of about 95% of the fluid, which increases the sperm concentration prior to entering the epididymis.
The sex organs of the green algae Chara are the male antheridia (red) and female archegonia (brown). A sex organ, also known as a reproductive organ, is a part of an organism that is involved in sexual reproduction.