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English: Complete demonstration of the orgasm process of an adult male. The subject is a 27-year-old healthy circumcised Caucasian male. The video begins with the subject's genitals in a non-aroused flaccid state (0:00). As arousal progresses(0:30), the subject's penis becomes erect, the scrotum tightens and the testicles elevate.
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses ...
Video_of_Penile_erection.ogv (Ogg multiplexed audio/video file, Theora/Vorbis, length 24 s, 320 × 240 pixels, 989 kbps overall, file size: 2.8 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Polygyny threshold model graph. The polygyny threshold model is an evolutionary explanation of polygyny, the mating of one male of a species with more than one female. The model shows how females may gain a higher level of biological fitness by mating with a male who already has a mate. The female makes this choice despite other surrounding ...
Polygynandry is a mating system in which both males and females have multiple mating partners during a breeding season. [1] In sexually reproducing diploid animals, different mating strategies are employed by males and females, because the cost of gamete production is lower for males than it is for females. [2]
A criticism against polygyny is that in almost all cultures and religious communities that practice it, polygyny is the only form of polygamy that is allowed; and, as such, this violates modern principles of equality between men and women, especially as in many such places females having multiple partners is violently punished through honor ...
Polygyny (/ p ə ˈ l ɪ dʒ ɪ n i /; from Neo-Greek πολυγυνία, from πολύ-(polú-) ' many ' and γυνή (gunḗ) ' woman, wife ') [1] is a mating system in which one male lives and mates with multiple females but each female only mates with a single male.