Chapter 10 - Sexual Behaviour Flashcards Preview

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Flashcards in Chapter 10 - Sexual Behaviour Deck (23):
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X chromosome

One of two types of sex chromosomes; individuals with two X chromosomes will usually develop into females

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Y chromosomes

One of two types of sex chromosomes; individuals with a Y chromosome will usually develop into males

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Turner syndrome

a condition caused by a XO genotype, characterised by frequent abnormalities of the ovaries and infertility

3

Klinefelter syndrome

A condition in males caused by XXY genotype, characterized by frequent problems with fertility, secondary sex characteristics and verbal skills

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Gonads

The internal organs, ovaries in females and testes in males that produce reproductive cells (eggs and sperm) and secrete sex hormones

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External genitalia

The external sex organs, including the penis and scrotum in males and the labia, clitoris and lower third of the vagina in females

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Intersex

A condition in which elements of both male and female development occur in the same fetus

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Ovaries

Female gonads; the source of ova and sex hormones

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Testes

Male gonads; source of sperm and sex hormones

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Sex-determining region of the Y chromosome (SRY)

A gene located on the short arm of the Y chromosome that encodes for testis-determining factor

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Testis-determining factor

A protein encoded by the SRY gene on the Y chromosome that turns the primordial gonads into testes

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Wolffian system

The internal system that develops into seminal vesicles, vans deferens, and the prostate gland in males

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Mullerian system

The internal system that develops into a uterus, Fallopian tubes, and the upper two thirds of the vagina in the absence of anti-mullerian hormone

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Testosterone

An androgen produced primarily in the testes

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Anti-mullerian hormone

A hormone secreted by fetal testes that causes the degeneration of mullerian system

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Androgen

A steroid hormone that develops and maintains typically masculine characteristics

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Androgen insensitivity syndrome (AIS)

A condition in which a genetic male fetus lacks androgen receptors, which leads to the development of female external genitalia and typically female gender identity and sexual behaviour

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Gender identity

The sense of being male or female, independent of genetic sex or physical appearance

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5-alpha-dihydrotestosterone

An androgen secreted by the testes that masculinizes the external genitalia

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Congenital adrenal hyperplasia

A condition in which a fetus is exposed to higher-than-normal androgens, resulting in masculinization of external genitalia and some cognitive behaviours in affected females

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Secondary sex characteristics

Characteristics related to sex that appear at puberty including deepening voice and facial hair growth in males and widening hips and breast development in females

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Estrogen

A steroid hormone that develops and maintains typically female characteristics

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Estradiol

An estrogen hormone synthesized primarily in the ovaries