sex - Sex Hormones, the brain and behavior Definitions of...

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Unformatted text preview: Sex Hormones, the brain and behavior Definitions of Sex Genetic Gonadal Hormonal Morphological Behavioral (gender role behavior) Identity Hypothalamus Adenohypophysis Testes or Ovaries Target tissues Control of Sex Hormones Indirect Loop Short Loop Direct Loop GnRH LH, FSH Testosterone or Estrogen & Progesterone neural inputs Sexual Dimorphisms Phenotypic differences between males and females They can be: anatomical physiological behavioral cognitive They can be: qualitative quantitiave Effects of Sex Hormones Organizational Effects structural sensitive period irreversible masculinization/defeminization Activational Effects act on existing structure no sensitive period reversible testes differentiate ovaries differentiate Bipotential tissues: Undifferentiated tissue that can differentiate into either a male or female form. Sexual Dimophisms: Structures, functions or behaviors that differ qualitatively or quantitatively between the sexes. Castrate male hamster at birth Prototypical Experiment (Males) (before period of brain differentiation)...
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sex - Sex Hormones, the brain and behavior Definitions of...

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