Ch. 4 Flashcards Preview

HDV 313: Human Sexual Development > Ch. 4 > Flashcards

Flashcards in Ch. 4 Deck (11):

What 3 hormones do the ovaries produce?

Androgen, Estrogen, & progesterone


What does the hormone progesterone do?

It regulates the menstrual cycle and prepares the uterus for pregnancy.


What is a hermaphrodite?

Someone born with ovarian & testicular tissue.
- Can happen in XX, XY, or XXY


Define Intersexed

When someone is born exhibiting both male and female external genitals.
- Part of the transgendered community


Turner's Syndrome

1/2,500 female births. Ovum without any sex chromosome
- typical external genitalia, but ovaries do not develop.
- ovaries do not produce steriod hormones..causing amenorrhea infertility.


Klinefelter's Syndrome

1/600 male births. Ovum contains extra X chromosome resulting in XXY. These men are infertile, tall w. feminized contours, have small testicles, low testosterone.


XYY Syndrome:

"Super Males" - may be sterile...thought to be more aggressive (not true).


Triple X Syndrome:

May cause slight mental retardation & fertility problems.


Adrenogenital Syndrome (AGS) or Cogenital Adrenal Hyperplasia (CAH)

1/5,000 - 1/15,000 births. Genetic female (XX), exposed to large amounts of androgen during prenatal development due to low cortisol levels.
- Internal organs remain female, but external organs may appear masculinized.


5 alpha reductase syndrome:

genital folds fuse to form the scrotum during male development in utero.
- DHT is critical for genital fusing
- males that lack this undergo incomplete differentiation of external genitalia
-These males are raised as girls until they reach puberty.


Androgen - insensitivity syndrome (AIS)

1 /41,000 - 99,000
- Genetics male (XY) does not respond to androgens & develops internal testes, w. female external genitalia.
Cause: single error in the gene for the androgen receptor.