Chapter 10.1: Sex and Hormones Flashcards
What does the SRY gene do?
It causes a mammalian embryo to develop into a male
Why is it impossible to have both a penis and a clitoris?
Either one develops from the same embryonic structure
What is the main difference between organizing effects and activating effects of hormones?
Organizing effects are long-lasting, whereas activating effects are temporary
What causes an embryo to develop female external genitals?
A low level of testosterone, regardless of estradiol
How does sexual differentiation of the brain differ between rodents and primates?
In rodents, testosterone must be aromatized to estradiol before it affects developing neurons
Which of these is true about sex differences in brain anatomy?
The mechanisms of sexual differentiation vary from one area to another
Prenatal exposure to higher than average levels of testosterone produces what effect, if any, on girls?
It leads to higher than average interest in boys’ toys and activities
When an antidepressant drug increases serotonin levels, which inhibits dopamine release, what happens to sexual behavior?
Decreased sexual arousal
Compared to other men, what are testosterone levels of married men?
Lower than average
What does the combination pill for birth control contain?
Estradiol and progesterone
Female sex drive depends on which hormone or hormones?
Estradiol
Vasopressin increases male mammals’ probability of which behavior?
Care for young
