1 / 17

Sex Drive

Sex Drive. The Hypothalamus mediates sex drive in animals. The areas are different for males versus females. Males: medial preoptic area Females: ventomedial area. Hormonal Effects After Puperty. For Males: Testosterone is needed to maintain sex drive. Castration reduces sex drive

glynn
Download Presentation

Sex Drive

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Sex Drive • The Hypothalamus mediates sex drive in animals. The areas are different for males versus females. • Males: medial preoptic area • Females: ventomedial area

  2. Hormonal Effects After Puperty For Males: Testosterone is needed to maintain sex drive. • Castration reduces sex drive • Injection of testosterone restores it

  3. Hormonal Effects After Puberty For female nonhuman animals: Estrogen and progesterone maintain sex drive. For human females: Estrogen and progesterone are not needed. Testosterone (produced by the adrenals) maintains sex drive.

  4. Some studies indicate a 3% to 7% chance of a male being gayIf a brother is gay then the chance can be as high as 25%Different studies have different estimates of the frequency of homosexuality

  5. 66% of mothers of male homosexuals recall stress during pregnancy33% for bisexuals10% for heterosexuals

  6. The incidence of male homosexuality is more than double that of female homosexuality

  7. Marind Anim of New Guinea • at age 6 the father chooses an adult male • from 12 to 16 adolescent has several male lovers • opposite sex marriages are arranged

  8. Batak of Northern Sumatratra • children view as sexual at age 6 • 6-16 years of age same sex activity is encouraged • adolescents best friend describes sexual prowess of his mate to convince girl and his parents that he would be a good mate

  9. A Linkage Between DNA Markers on the X Chromosome and Male Sexual Orientation

More Related