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The hemipenis is the intromittent organ of Squamata, [4] which is the second largest order of vertebrates with over 9,000 species distributed around the world. They differ from the intromittent organs of most other amniotes such as mammals, archosaurs and turtles that have a single genital tubercle, as squamates have the paired genitalia remaining separate. [5]
A penis (/ ˈ p iː n ɪ s /; pl.: penises or penes) is a male sex organ that is used to inseminate female or hermaphrodite animals during copulation. [1] [2] Such organs occur in both vertebrates and invertebrates, including humans, but not in all male animals. [3] The term penis applies to many intromittent organs, but not to all.
In some turtles, crocodiles, some birds, and in all mammals, males possess a penis centered along the midline of the body. During copulation, it becomes erect due to engorgement with blood or lymph, though in many animals it also contains a stiff or even bony support structure. When not in use, its soft penile tissue is usually flaccid, and ...
Buried penis on a circumcised 30-year-old male not due to obesity. Buried penis, also called hidden penis or retractile penis, is a congenital or acquired condition in which the penis is partially or completely hidden below the surface of the skin. A buried penis can lead to urinary difficulties, poor hygiene, infection, and inhibition of ...
The turtle is emblematic of the penis and also of promiscuous intercourse, because turtles were once thought to conceive by thought alone, making paternity impossible to prove. Eggs are the progeny of turtles and other lower animals, so the word dàn ( 蛋 ) is a metonym for offspring.
About 50% of female sea turtles complete "false crawls," which occur when they crawl onto the beach but return to the water without laying eggs.
A male circles around female, biting her shell in the process. He then climbs upon the female and insert his penis (a white organ, usually only seen upon careful inspection during mating, as it is hidden inside the male and can only be coaxed out with sexual implication) into the cloaca of a female, which is located around the tail. The male ...
The study, published Feb. 15 in The World Journal of Men’s Health, examined data from 75 different studies between 1942 and 2021 that recorded the penis size of their study participants.