Fertilization Flashcards
Fertilization
When the sperm meets the egg
Takes how many sperm to fertilize a egg?
1 sperm
How many sperm get ejaculated into a woman?
500 million sperm
Where does fertilization occur?
In the Fallopian tubes
Where does the embryo attach?
The Uterus
What is the Uterus?
Pear-shaped muscular-walled organ where the fetus develops for 9 months
1st stage of the fetus development
Embryo (first 3 months)
Week 2
Made up of 46 chromosomes 23 from each parent
Pre-determine all of person’s physical characteristics
Umbilical Cord
Lifeline from mother to baby
Carries food, oxygen, and water
Attached to the placenta
Placenta
Thick-walked circular organ rich in blood and nutrition
Afterbirth
Tissues, fluids, placenta
Week 6
Size of a raisin
Heart has begun to beat
Spine and spinal cord grow the fastest
Amniotic Sac
(Bag of waters) When broken the mother knows it’s almost time to deliver
Covering around the fetus
12 weeks
Vocal cords, cry, suck thumb
18 weeks
Eyelashes, eyebrows
20 weeks
Vaginal ultrasound (18-22 weeks) make sure the heart is beating properly, all have 10 fingers & toes
Able to recognize the mom’s voice, fingernails, fingertips
6 months
Sleep most of the time
Birth
(Out the vagina)
Cervix must dilate to 10 centimeters
Cervix
Neck of the Uterus which has to stretch open during labor
If things don’t go as planned…
Miscarriage: baby dies before it’s term, birth
Premature: baby is born prior to 37 weeks)
Breech Birth: baby is born feet first
Caesarian Birth: baby is born out the stomach
Still Birth: during labor baby dies
