BIO 02 Lesson 3: Female Reproductive System

FEMALE REPRODUCTIVE SYSTEM

It is much more complex compare to male. Her body also nurtures and protects a developing fetus during nine months of pregnancy

VULVA

CERVIX

UTERUS

FALLOPIAN TUBE

OVARY

Parts of Female Reproductive Stems

VULVA

external genitalia of the female

VAGINA

-Acts as birth canal during normal child birth

-Receives penis during copulation

-Two pairs of fleshy folds protect the vaginal opening from the outside environment:

Labia Majora (thicker flaps of tissue)

Labia Minora (thinner flaps of tissue)

HYMEN

a thin membrane that surrounds the opening to the vagina and can come in different shapes

Normal, imperforate, microperforate, septate

CLITORIS

- has no function in reproduction but is the main pleasure center for females during sex. It has more nerve endings than anywhere else in the body.

"Contains a high concentration of nerve endings"

Urethral Meatus

AKA "Urethral Orifice / Opening"

Is the opening of urethra where urine exits

CERVIX

-Lower end of uterus and opens into vagina

-Made up of strong muscle

-Directs the sperm into uterus during coitus

UTERUS

-Site where offspring grows

-Receives, retain and nourishes fertilized egg

ZYGOTE

fertilized egg

FALLOPIAN TUBE

AKA Uterine Tubes or Oviduct

-Mature egg travels for 3-4 days and is swept by finger-like (cilia)

-Site for fertilization

3.9 inches long

-Attaches to uterus and don't physically attach to ovary

Ectopic pregnancy

is a complication of pregnancy in which the embryo attaches outside the uterus.

Abdominal Pregnancy

rare and dangerous type of ectopic pregnancy where a

fertilized egg implants outside of the uterine cavity, but not in the fallopian tube or

ovary

FIMBRAE

is a finger -like projections at the distal end.

Hormonal IUDs

Release progestin to thicken cervical mucus, which blocks sperm, and can also stop ovulation.

Copper IUDs

Prevent sperm from fertilizing an egg and may prevent a fertilized egg from implanting in the uterus.

OVARY

-Primary reproductive organs of the female

-Paired organs located on either side of the uterus

-have both exocrine gland & endocrine gland functions

2 million potential egg cells

A female is born with about _____________ in her ovaries. However, by puberty, only 25% or about 400,000 will remain.

300 to 400 eggs will mature

In female's life time, out of the 400,000 at puberty, only _________________

OVUM

A mature egg cell

One

Hormones will enable __ immature egg to complete its development each month.

#Estrogen

Every 28 days, an ovum is released from an adult female's body.

Menstruation

Also known as period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle.

• The follicular phase (the egg develops).

• The ovulatory phase (release of the egg).

• The luteal phase (hormone levels decrease if the egg doesn't implant).

Menstruation Phases

follicular phase

the egg develops

ovulatory phase

release of the egg

luteal phase

hormone levels decrease if the egg doesn't implant