NSCI 201 Chapter Notes - Chapter 30: Sexually Dimorphic Nucleus, Sexual Dimorphism, Estrous Cycle
8 May 2016
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Document Summary
Detailed here is simply a series of interesting scienti c ndings, which by no means de ne the intricacies of gender and gender identity. Strong dimorphism between males and females, particularly in antennae in these animals, large parts of sensory systems dedicated to antennae. Male antennae are more feathered, have different function than female antennae. There are internal differences as well in the nervous system, the male has an additional macroglomerular complex, antennal lobe neurons. Chromosomal sex and primary sex determination in humans! Notice that y chromosome is a lot shorter not many y-linked genes, but males are at a high risk of x-linked defects. Sry gene is important in male gonad speci cation, as default" is generally female. Once speci ed, testicular tissue secretes androgens (e. g. testosterones). Same set of tissues in both sexes, essentially, bipotential. Primary sex characteristics: generally, all genitalia and sexual organs. All sex steroids are derived from cholesterol, converted to dihydrotestosterone or estradiol (oestrogen).
