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33 terms

NeuroBiology Ch17

STUDY
PLAY
SRY
codes for TDF; causes the development of the testes, and the hormones from th testes are largely responsible for making the male fetus develop
SRY
causes human to develop as a male; located on the Y chromosome
mullerian duct
develops into the female internal reproductive system
mullerian duct
prevented from developing when testosterone is produced
wolffian duct
develops into the male internal reproductive system with the presence of testosterone
wolffian duct
degenerates without the upsurge of testosterone
true
during the first 6 weeks of pregnancy, the gonads are in an indifference stage that can develop into either ovaries or testes. (True/False)
androgens
male hormones
estrogens
female hormones
aromatase
enzyme that converts testosterone to estradiol
steroids
fatty and can easily pass through cell membranes and bind to receptors within the cytoplasm, giving them direct access to the nucleus and gene expression
testes
primarily responsible for the release of androgens
10
female concentrations of testosterone are roughly __% of those found in males
gonadotropins
LH and FSH
LH
stimulates the testes to produce testosterone
FSH
involved with the maturation of sperm cells within the testes
LH
stimulates ovulation in females
FSH
stimulates follicle development in ovaries
sexual dimorphism
Differences in physical characteristics between males and females of the same species.
preoptic area of the anterior hypothalamus
clustered around the third ventricle, the most distinct sexual dimorphic region in the mammalian brain; appears to have a role in reproductive behaviors.
estrous cycle
lesions to the preoptic area of the anterior hypothalamus in female rats causes a disruption in the ___.
SDN
five to eight times larger in males than in females (rats)
larger
INAH-1, INAH-2, INAH-3 are ____ in males than in females (humans)
INAH-3
clearest dimorphic structure in humans; first reported to be twice as large in men as women by Laura Allen, Roger Gorski, and their colleagues
women
which sex is better at verbal tasks?
women
which sex is better at naming objects of the same color?
women
which sex is better at listing words beginning with the same letter?
women
which sex is better at verbal memory?
men
which sex is better at map reading?
men
which sex is better at maze learning?
men
which sex is better at mathematical reasoning?
men
which sex is better at mental rotation of objects?
androgens
provide a unitary signal for masculinization in the brain