Post on 24-Feb-2016
description
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")