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English: Anatomical drawing of a male C. elegans nematode with emphasis on the reproductive system. Note that the actual worm is colorless and transparent. Also note that the raw SVG version of the image will not render correctly in Firefox 23.0.1 or earlier (possibly later as well) due to known Mozilla program bug #376027 but should do so in any other browser.
Male nematodes may have one or two spicules which serve to open the vulva of females and facilitate the transmission of sperm, although sperm is not transferred directly by or through the spicules. [2] [3] The gubernaculum is another organ of the nematode male copulatory system which guides the spicules during copulation.
Male reproductive toxicants (4 C, 3 P) Pages in category "Animal male reproductive system" ... Spicule (nematode anatomy) T.
In nematodes, the gubernaculum is a hardened or sclerotized structure in the wall that guides the protrusion of the spicule during copulation. [1] For example, in Caenorhabditis elegans , spicules serve to open and dilate the vagina of the hermaphrodite and the gubernaculum is a grooved plate in which the spicules move; the gubernaculum is ...
“The new anatomical charts are different because they ... integrate with equity, analogous organs of the male and female reproductive systems, clitoris and all its parts included, are based on the latest scientific knowledge of the genitalia, integrate aspects of anatomy and physiology related not only to reproductive, but also to sexual ...
This means that in the event of a rival male's sperm occupying the reproductive tract of a female, the human penis is able to displace the rival sperm, replacing it with his own. [42] Semen displacement has two main benefits for a male. Firstly, by displacing a rival male's sperm, the risk of the rival sperm fertilising the egg is reduced. [43]
Extremity of a male nematode showing the spicule, used for copulation, bar=100 μm [48] Most nematode species are dioecious, with separate male and female individuals, though some, such as Caenorhabditis elegans, are androdioecious, consisting of hermaphrodites and rare males. Both sexes possess one or two tubular gonads. In males, the sperm ...
The main male sex organs are the penis and the scrotum, which contains the testicles that produce semen and sperm, which, as part of sexual intercourse, fertilize an ovum in the female's body; the fertilized ovum develops into a fetus, which is later born as an infant. The corresponding system in females is the female reproductive system.