Development Flashcards
1
Q
SHH
A
limbs – polarizing activity. AP patterning. CNS development. mutx–> holoprosencephaly
2
Q
WNT-7
A
D-V organization. produced at end of developing limb
3
Q
FGF
A
stimulates underlying mesoderm, lengthening of limbs
4
Q
Day 0
A
fertilization, forming zygote
5
Q
hCG secretion begins
A
within 1 week, after implantation of blastocyst
6
Q
during week 2
A
bilaminar disc (epiblast, hypoblast)
7
Q
week 3
A
trilaminar disc (gastrulation). primitive streak, notocord, mesoderm, neural plate form
8
Q
organognesis
A
Weeks 3-8
Most susceptible to teratogens
9
Q
Neural tube closure
A
by week 4
10
Q
Heart begins to beat
A
week 4
11
Q
formation of limbs
A
week 4
12
Q
fetal period
A
starts in week 8
initiation of movement
13
Q
male/female genitalia
A
week 10
14
Q
12 months
A
- stands, walks first steps, throws ball
- 2 finger pincer
- first words (other than mama/dada)
- separation anxiety, follows 1-step command with gesture
15
Q
18 months
A
- runs, kicks ball
- builds tower of 2-4 clothes, removes clothing
- 10-25 word vocab, identifies >1 body part
- understands “mine”. pretend play
16
Q
2 years
A
- walks up/down stairs with both feet on each step. jumps.
- builds 6-cube tower, copies a line, turns pages
- 50+ word vocab. 2-word phrases
- 2 step command, parallel play, toilet training begins
17
Q
3 years
A
- up/down stairs with one foot on each step. tricycle
- copies circle, uses utensils.
- 3 word sentences. speech 75% intelligible.
- knows age/gender, imaginative play
18
Q
4 years
A
- balances and hops on 1 food
- copies a square
- identifies colors, speech 100% intelligible
- cooperative play
19
Q
5 years
A
- skips, walks backward
- copies a triangle, ties shoelaces, independent dressing/bathing, prints letters
- counts to 10. 5-word sentences
- has friends, completes toilet trainings
