PY 466 CH 10

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First trimester sexual differentiation

Internal sex organs External sex organs

Attachment

Monogamy → evolved mating system • Offspring survival

The gonadotropic hormones that stimulate both the ovaries and testes are ______.

luteinizing and follicle-stimulating hormones

According to information presented in the textbook, an increased rate of homosexuality/bisexuality is noted in ______.

women with congenital adrenal hyperplasia

Third trimester sexual differentiation

Brain masculinization or femininization

According to information presented in the textbook, a novel female will elicit another bout of sexual behavior in a sexually satiated male rat. This is referred to as the ________ effect.

Coolidge

_____ is a neuropeptide associated with attachment behavior in humans and other mammals.

Oxytocin

The key factor that determines whether undifferentiated gonads develop into testes is the ______.

SRY gene located on the Y chromosome

According to information presented in the textbook, the ______ effect refers to the situation in which the odor of a male rodent will accelerate the onset of puberty in a female rodent.

Vandenbergh

An example of a secondary sex characteristic is ______.

a deep voice

A human female is more likely to initiate sexual activity with her partner ______.

at the point in her menstrual cycle when estradiol levels are highest

The Müllerian system structures are the precursors to the ______.

female internal sex organs

The formation of the ovaries during prenatal development is controlled by ______.

no factor

The key distinction between an organizational hormone effect and an activational hormone effect is that ______.

organizational effects are permanent

According to information presented in the textbook, nest building ("nesting") is facilitated by administration of ______.

progesterone

According to information presented in the textbook, odor of human female underarm sweat can ______.

synchronize menstrual cycles in women

The gonads of a 6-week-old human XY-male fetus appear as ______.

undifferentiated (neither male nor female)

A person's genetic sex is determined by ______

the sperm, which contributes either an X or a Y chromosome


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