Finals: Sexual Behavior Flashcards
• An individual’s genetic sex begins with sex chromosomes inherited from two parents.
• Mothers provide an X chromosome to all their offspring;
• Fathers determine the offspring’s sex by providing either another X ( producing a female) or a Y chromosome (producing a male).
Sexual development
- The internal organs, ovaries in females and testes in males, that produce reproductive cells (eggs and sperm) and secrete sex hormones.
Gonads
- The external sexual organs, including the penis and scrotum in males and the labia, clitoris, and lower third of the vagina in females.
External genitalia
- A condition in which elements of both male and female development occur in the same fetus.
Intersex
- Male gonads; source of sperm and sex hormones.
Testes
The internal system that develops into seminal vesicles, vas deferens, and the prostate gland in males.
Wolffian system
- The internal system that develops into a uterus, fallopian tubes, and the upper two thirds of the vagina in the absence of anti-Müllerian hormone.
Müllerian system
- An androgen produced primarily in the testes.
Testosterone
- A hormone secreted by fetal testes that causes the degeneration of the Müllerian system.
Anti-Müllerian hormone
- A steroid hormone that develops and maintains typically masculine characteristics.
Androgen
- Female gonads; the source of ova and sex hormones.
Ovaries
- A gene located on the short arm of the Y chromosome that encodes for testis-determining factor.
sex-determining region of the Y chromosome (SRY)
- include facial hair and a deeper voice for males and wider hips and breast development for females.
Secondary sex characteristics
The average age of puberty has dropped dramatically over the past century and a half, from about_____ to about _____ years of age.
16 to about 12 yrs of age
A hormone released by the hypothalamus that stimulates the release of lutenizing hormone (LH) and follicle-stimulating hormone (FSH) by the anterior pituitary gland.
Gonadotropin-releasing hormone (GnRH)
- A hormone released by the anterior pituitary that stimulates the development of eggs in the ovaries and sperm in the testes.
Follicle-stimulating hormone (FSH)