Sex 2.0 Flashcards
What does the mPOA stand for?
medial pre optic area
What happens where there are lesions in the mPOA to both sexes?
Both sexes stop having sex
What happens to females where there is lesions in the mPOA?
- cycle stops
- sex resumes with E & P
What happens to males where there is lesions in the mPOA?
- no change in hormones
- decreased in motivation
What does the mPOA contain?
several nuclei
What does the SDN stand for?
sexually dimorphic nucleus
Where is the SDN located?
in the mPOA
T or F: the SDN is bigger in females
false
- large in males bc they have more neurons
Are there gender differences in the SDN during development?
- has the same # of neurons at birth
- T makes apoptosis decrease
- males have more neurons as adults
What does the AVPV stand for?
Anteroventral periventricular nucleus
What are the gender differences in AVPV?
- females have bigger & more neurons
- cycle= feedforward
What gender has the most # of neurons in the AVPV @ 1st?
- none, they both have the same #
- T increases apoptosis
- results, in females have more neurons
What does INAH stand for?
Interstitial Nuclei of the Anterior Hypothalamus
What gender has a bigger INAH?
males have a bigger INAH than females & homosexual males
What gender has more neurons in INAH?
- neurons more in males
- sexuality doesn’t matter
What are more details about male homosexuality?
- monozygotic twins have 60% concordance
- higher incidence in some families
- # of older biological brothers matters
What does CAH stand for?
Congenital adrenal hyperplasia
What do prenatal adrenals do to T?
it increases it
What kind of genitalia do CAH do they have?
- in between male and female
When does secretion stop for CAH people?
at birth
T or F: They do not alter genitalia in CAH people
false
- they do alter
What is the majority of gender that CAH become?
female
What is the most probable sexuality for CAH individuals?
- the majority are heterosexual
- higher than average homosexual
What is androgen insensitivity syndrome?
when a person who has one X and one Y chromosome (typically seen in males) is resistant to hormones that produce a male appearance (called androgens)