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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]
Males' individual muscle fibers are larger than women's, which results in their more muscular appearance. Their larger muscle fibers appear responsible for their more considerable absolute force production. [28] The sex difference in muscle mass remains after adjusting for body weight and height. [28]
In adults, the average weight varies from around 40 kg (88 pounds) for the smallest and most lightly built tropical people to around 80 kg (176 pounds) for the heavier northern peoples. [2] Size also varies between the sexes, with the sexual dimorphism in humans being more pronounced than that of chimpanzees , but less than the dimorphism found ...
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Articles relating to the human penis, an external male sex organ (intromittent organ) that additionally serves as the urinary duct.The main parts are the root, body, the epithelium of the penis including the shaft skin, and the foreskin covering the glans.
Naked human male body, seen in frontal or anterior view, standing in w:anatomic position. Reason Large and detailed image of the human body Articles this image appears in Human body (so far - just uploaded it) Creator Mikael Häggström. Support as nominator (and model) Mikael Häggström 19:19, 24 August 2008 (UTC)
On the trunk of the body, the chest is referred to as the thoracic area. The shoulder in general is the acromial, while the curve of the shoulder is the deltoid. The back as a general area is the dorsum or dorsal area, and the lower back as the lumbus or lumbar region. The shoulderblades are the scapular area and the breastbone is the sternal ...
Male urethra (9 P) Pages in category "Human penis anatomy" The following 32 pages are in this category, out of 32 total. This list may not reflect recent changes. A.