Lecture 3 Flashcards
o 3 periods of prenatal development
- Germinal: c__ to _ weeks
- Lasts until z__ attaches to u__ wall
- Rapid c__ d__
• Embryonic: _-_th week
• O__ and s__ begin to develop in a major way.
• Cell d__, cell d__, cell m__, and h__ influences occur
-sometimes called __ period.
- Fetal: _th week to b__
- Continued development of p__ structures and rapid growth of the b__
conception, 2
zygote, uterine
cell division
3, 8,
organs, systems
differentiation, death, migration, hormonal
sensitive
9th, birth
physical, body
o Preformationism vs. epigenesis
- Preformationism: the view that was believed before epigenesis that assumed an entire p__ is contained in the s__ and grows inside the mother
- Epigenesis: new s__/s__ emerge from something very s__
person, sperm
structures/systems, small
Conception typically occurs in f__ t__.
-cell division becomes __ rapid over time.
fallopian tube
more
o Proximodistal development
• Development starts from the c__ and then goes o__ to other parts of the body
o Cephalocaudal development
• Development starts at the __ and then goes straight __ the body
o Apoptosis
• Cell d__
center, outwards
head, down
death
o Cleft palate
• O__ in the roof of the mouth; didn’t d__ completely
opening, develop
o When fetal movement begins
• Approximately __ weeks
5.5
o Process of sexual differentiation
- If t__ secrete a__, m__ genitalia is formed
- In the __ of androgens, f__ genitalia is formed
- Begins around the _th week
testes, androgens, male
absence, female
8
o “Quickening”
• Week __, when you can feel fetal m__ (note- fetal movement occurs b__ this period, baby just not __ enough to feel moving around)
16
movement
before, big
o Age of viability
• __ weeks - the fetus can s__ on its own
28
survive
