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In human anatomy, the penis (/ ˈ p iː n ɪ s /; pl.: penises or penes; from the Latin pēnis, initially "tail" [1]) is an external sex organ (intromittent organ) through which males urinate and ejaculate. Together with the testes and surrounding structures, the penis functions as part of the male reproductive system.
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.
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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 function, are inclusive.”
The penile raphe is part of a broader line in the male reproductive organs, that runs from the anus through the perineum (perineal raphe) and continues to the scrotum and penis, collectively referred to as median raphe. [3] [4] The penile raphe along with the skin between it are homologous to the female labia minora. [5] [6]
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The two crura flank the bulb – one to each side of the bulb. Each crus is attached at the angle between the perineal membrane and ischiopubic ramus. The deep artery of the penis enters the anterior portion of the crus. Distally, each crus transitions into either corpus spongiosum of the body of the penis. [1]
Anatomy photo:42:07-0103 at the SUNY Downstate Medical Center - "The Male Perineum and the Penis: The Corpus Spongiosum and Corpora Cavernosa" Image at downstate.edu; Image at downstate.edu; Histology image: 17703loa – Histology Learning System at Boston University; Encyclopedia of Reproduction