BIOL 178 Lecture Notes - Lecture 10: Penile Spines, Sexual Arousal, Castration
6 Mar 2020
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Male sexual behavior in primates: description: most primates show stereotyped sexual behaviors, humans, bonobos and orangutans are exceptions. Male sexual behavior in primates: hormonal correlates: sexual behavior correlates with androgen levels , seasonally, in some species, across the lifespan. Male sexual behavior in primates: nonhuman primates, castration leads to . High variability among individuals: t replacement leads to . Restoration of sexual behavior: castration & androgen replacement in primates, castration can affect penile morphology in primates. Sensory info from the penis may be important in sexual behavior (many species) Anesthetize penis or cut penile nerves impairments in intromission/ejaculation. Penile spines: overlie tactile receptors; involved in sensory feedback; androgen-dependent: hormonal correlates in humans - hypogonadal men (very low t levels, without t replacement: Normal erections in response to erotic stimuli. Low frequencies of sexual thoughts, spontaneous erections: with t replacement: Dose-dependent in erections, sexual behavior, sexual fantasies: hormonal correlates in humans - male sex offenders, castration leads to .
