What Are Genital Lesions?

Genitals: Organs in which an organism produces germ cells to reproduce offspring . The genitals of higher plants are flowers (including stamens and pistils). The genitals of humans and higher animals include the male's seminal vesicles, vas deferens, testes, penis, etc .; female ovaries, fallopian tubes, uterus, vagina, etc. The genitals of humans and higher animals are necessary conditions for sexual behavior, so the reproductive organs are also called sexual organs.

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Genitalia: production of organisms

Reproductive organs, to be precise, refer to any organization in a complex organism that is involved in the sexual reproduction and formation of the reproductive system (in the strict sense, not necessarily all organs).

Humans and most mammals

The reproductive organs of humans and most mammals are:

Male (male):

The male and female reproductive organs are from the same source.

Genital conception

A few weeks after conception, the reproductive organs of the male and female embryos are anatomically the same (although their sex chromosomes are different), basically similar to the female reproductive organs, with a pair of "urogenital folds" with a small bulge in the middle There is a urethra behind the bulge. There is also a pair of gonads located in the body.

Genital development

During the development of a normal human embryo, the SRY gene (located on the male chromosome) causes the gonads to develop into the testis, and the gonads without the SRY gene develop into the ovaries. After this, the development of the internal and external genitalia is determined by hormones secreted by some embryonic gonads. If the gonads develop into testes, and the testes secrete testosterone, and the cells also respond to testosterone, the lateral wrinkles will swell and the midline will fuse to form the scrotum. The bulge will grow and straighten to form a penis, the inside of the wrinkle will wrap around the penis, and the midline will fuse to form the penile urethra. After birth, the testicles descend into the scrotum. If the gonads develop into ovaries, another set of processes can form the female internal and external genitals.

Genitals other

Special changes in the above general process will result in hermaphrodites of varying degrees.

Later in puberty, the reproductive organs will develop on a smaller scale.