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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]
English: Drawing of epididymis of reptile, monotreme and scrotal mammals. Date: 1 August 2019 (original upload date) Source: Attached with Ticket:2019080110007549 ...
Male monotremes are testicond (have intraabdominal testes) with the testes undergoing seasonal emergence during winter. The fully developed seminiferous tubules exhibit distinctly small stages of spermatogenesis in that more than one stage is often observed in a cross section of the tubule, [3] a characteristic of spermatogenesis that has also been observed in a reptile, [4] common in birds [5 ...
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.
In amniotes (mammals, birds, and reptiles), the archinephric duct has become a true vas deferens, and is used only for conducting sperm, never urine. As in cartilaginous fish, the upper part of the duct forms the epididymis. In many species, the vas deferens ends in a small sac for storing sperm. [21]
Kangaroos may have a reputation for being cute and cuddly animals, but the males of the species can be pretty intimidating. In fact, if you happen to run into one of these muscly males, you wouldn ...
ChatGPT, the massively popular conversational chatbot, was down for a short time before the issue was resolved, according to an OpenAI status update.
The reproductive system of male snakes includes testicles, epididymis, vas deferens, hemipenes, and renal sex segment. [4] Testes produce sperm that are transported by epididymis to the vas deferens, which then transfer the sperm to hemipenes. These snakes have a double penis with one testis supplying seminal fluid to each hemipenis. [4]