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Development of external genitals showing homologues from indifferent to both sexes - male on left. When the fetus is exposed to testosterone, the genital tubercle elongates (primordial phallus) and develops into the glans and shaft of the penis and the urogenital folds fuse to become the penile raphe.
Sex organs are typically differentiated into male and female types. In animals (including humans), the male sex organs include the testicles, epididymides, and penis; the female sex organs include the clitoris, ovaries, oviducts, and vagina. The testicle in the male and the ovary in the female are called the primary sex organs. [1]
They appear to be more obvious in people with oily skin types, with some rheumatic disorders, and in hereditary nonpolyposis colorectal cancer. [10] In the latter, the most common site for Fordyce spots is the lower gingiva (gums) and vestibular mucosa.
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]
The genital ridge continues to grow behind the developing peritoneal membrane. By week six, string-like cell congregations called primitive sex cords form within the enlarging genital ridge. Externally, a swelling called the genital tubercle appears above the cloacal membrane. [4] The mesoderm extends to the midventral line.
In male human anatomy, the glans penis or penile glans, [1] commonly referred to as the glans, (/ ɡ l æ n z /; from Latin glans meaning "acorn") [2] is the bulbous structure at the distal end of the human penis that is the human male's most sensitive erogenous zone and primary anatomical source of sexual pleasure.
In most terrestrial mammals, the scrotum (pl.: scrotums or scrota; possibly from Latin scortum, meaning "hide" or "skin") [1] [2] or scrotal sac is a part of the external male genitalia located at the base of the penis. It consists of a sac of skin containing the external spermatic fascia, testicles, epididymides, and vasa deferentia. The ...
The term genital enhancement seem to be generally used for genital modifications that modify the external aspect, the way the patient wants it. [1] The term genital mutilation is used for genital modifications that drastically diminish the recipient's quality of life and result in adverse health outcomes , whether physical or mental .