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Finally, in adults, the head represents approximately 12% of the body length. The cephalocaudal trend is also the trend of infants learning to use their upper limbs before their lower limbs. The proximodistal trend, on the other hand, is the prenatal growth from 5 months to birth when the fetus grows from the inside of the body outwards.
There is a genetic cephalocaudal (head-to-foot) trend in both prenatal and postnatal development. [2] As a baby grows, they learn to sit up, stand, walk, and run; these capacities develop in a specific order with the growth of the nervous system, even though the rate of development may vary from child to child.
Drawing on some transsexualism cases, Garcia-Falgueras and Swaab state that "[f]rom these examples it appears that the direct action of testosterone on the developing brain in boys and the lack of such action on the developing brain in girls are crucial factors in the development of male and female gender identity and sexual orientation".
This supports the theory that the prenatal testosterone surge is crucial for gender identity development. Additionally, females whose mothers were exposed to diethylstilbestrol (DES) during pregnancy show higher rates of bi- and homosexuality. [4] Variations in the hypothalamus may have some influence on sexual orientation.
Memory is one of the most crucial aspects of our health and human identity. Through memory, we create our individuality, our specific relationships with the world we inhabit, and we learn to stay ...
gender identity: the child recognizes that they are either a boy or a girl and possesses the ability to label others. gender stability: the identity in which they recognizes themselves as does not change; gender consistency: the acceptance that gender does not change regardless of changes in gender-typed appearance, activities, and traits.
A 276-kilogram bluefin tuna that was auctioned for 207 million Japanese yen (about $1.3 million) is carried into an Onodera sushi restaurant after the first tuna auction of the New Year in Tokyo ...
While Uber stock took a hit on Thursday due to Waymo’s latest move to Miami, not all of Wall Street is convinced the Waymo threat is a death knell to Uber’s business.