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Anatomical characteristics of the human female and male. Sexual differentiation begins during gestation, when the gonads are formed. The general structure and shape of the body and face, as well as sex hormone levels, are similar in preadolescent boys and girls.
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Cis men's eyebrows tend to be below their brow ridges while cis women's eyebrows tend to be above their brow ridges. Accordingly, FFS to raise the eyebrows results in a face with a more womanly appearance. [8] Orbit recontouring. In some studies, the eye shape has been shown to be the key differentiating feature between cis males and females.
The primary sex organs are the gonads, a pair of internal sex organs, which diverge into testicles following male development or into ovaries following female development. [8] As primary sex organs, gonads generate reproductive gametes containing inheritable DNA. They also produce most of the primary hormones that affect sexual development, and ...
Pseudohermaphroditism is an outdated [1] term for when an individual's gonads were mismatched with their internal reproductive system and/or external genitalia. The term was contrasted with "true hermaphroditism" (now known as ovotesticular syndrome), a condition describing an individual with both female and male reproductive gonadal tissues.
The human brain. Differences in male and female brain size are relative to body size. [83] Early research into the differences between male and female brains showed that male brains are, on average, larger than female brains. This research was frequently cited to support the assertion that women are less intelligent than men.
Edelman and Zimman associate this shift with trans men's willingness to refer to their genitals with both male and female terms, sometimes at the same time. [5] Often, from this perspective, the difference between a cisgender man's penis and a non-operative transgender man's clitoris is merely one of size, not of kind. [6]
Dihydrotestosterone, also known as (DHT) will differentiate the remaining male characteristics of the external genitalia. [11] Further sex differentiation of the external genitalia occurs at puberty, when androgen levels again become disparate. Male levels of testosterone directly induce growth of the penis, and indirectly (via DHT) the prostate.