Egg is ____________ than the sperm

Structures

- in order of egg pathway

Ovary - EGG matures in a follicle produces estrogen

Fallopian tubes1. ____________ for the egg to the uterus2. ____________ (where sparky and olive meet)

UterusDescription: ___________________________Function: ___________________________

Fundus - ___________________________endometrium - _______________________Cervix - ____________________________

Fundus

Sections:

Vagina Functions:

1. 2.

3.

Two sets of folds which protect the vaginal opening

Two sets of folds which protect the vaginal opening

Labia MajoraLabia MinoraClitoris

External Structures:

____________________________________________________________

erectile tissue

vulva

Egg Pathway

_________(ovaries) _______________(fertilization)

Uterus

__________

(Attaches to uterine wall as zygote)

(Birth Canal)

Uterine Cycle

Female Hormones

FSH ___________________________

LH ________________________

_____________

_______________

From the Brain

From the ovaries:

__________________

maintains thickness. of uterine lining (endometrium)growth of corpus luteum

ovulation - tells ovaries to release egg, produce progesterone and stimulates follicle to become corpus luteum

thickening of the uterine lining female secondary sex characteristics (auxiliary and pubic hair, wide hips, breasts development)

-pituitary

lining of the uterus and blood are discharged

Duration: 5 - 7 days1-5 Menstruation:

6-14 Follicular phase

14-15 Ovulation

16 - 28 Luteal phase

Uterine Cycle

egg released from ovary

follicle in the ovary grows

Uterine Cycle / Menstrual Cycle 28 days

Follicular Phaseimmature egg stimulated by ________ to complete its first meiotic division

follicle which surround the maturing egg releases _____________ which causes mitotic divisions of cells in the uterine lining causing the lining to thicken

duration: 7 days: Day 7- 14

elevated estrogen in turn tells the pituitary gland to release LH,

- an elevation in LH causes the follicle to rupture and _________________

- duration: ___________ (day 14 of the cycle)

Ovulation

Luteal Phase:The ruptured follicle grows larger and becomes a structure called the ______________(yellow body)

The corpus luteum begins to secrete _____________ and ________________ which stimulates continued thickening of the uterine lining

If no fertilization - corpus luteum stops secreting estrogen and progesterone and _____________________starts

Duration 14 days

Fertilization

If ovulation occurs anytime from ________________________after _____________________ fertilization may result in the fallopian tubes

union of sperm and egg

1.The enzymes in the acrosome of several sperm break down the egg's _____________________ 2. the head of __________________ cell fuses with the egg's cell membrane 3.Only the _____________ and _______________ enter the cytoplasm of the egg4. egg cell membrane changes to prevent other sperm from entering

process:

Events of Pregnancy

Implantation: the zygote (fertilized egg) forms a ball of cells and travels down the fallopian tubes to the uterus and burrows into the uterine wall.

First Trimester - ________________________ - most dramatic changes - the blastocyst (ball of cells) begins to differentiate and is called an ___________________ - three primary germ layers form: __________________ ______________ _______________ all body tissues will form from these layers. - placenta grows -brain, spinal cord develop -heart begins ___________________ - by 5 weeks - human features such as _______ & ________ form - week 8 on till birth referred to as ________________

8 weeks

Second Trimester - _____________

-fetal heartbeat is audible-___________begins to form-___________ cycles-swallowing-kicks feet-eyes open-_________________ in length

Third Trimester - _____________________-Fetus grows quickly-can see light and darkness-can react to ______________-deveops fat deposits under skin

Embryonic Membranesamniotic sac - contains fluid which cushions embryo from shock, mechanical injury and keeps it moist

chorion - forms small fingerlike projections called chrionic villi which will develop into the placenta and umbilical cord which carry food and oxygen to fetus and wastes away

Birth

270 days after fertilization

1. ______________ from fetal membranes initiate childbirth

2. amniotic sac ________________

3. contractions of the uterus get stronger contractions eventually push the baby out through the __________ and though the ______

4. __________________and ____________ are expelled about 30 minutes after birth ("after birth")