Chapter 5- 4th to 8th Weeks of Development Flashcards
1
Q
4th Week of Development Changes
A
- Embryo curves
- Pharyngeal arches form
- Rostral neuropore closes
- upper limb buds, otic pits, lens placode, and caudal eminence forms
- remnants of cardiovascular system
2
Q
5th Week of Development Changes
A
- Head enlargement
- Mesonephric ridges
3
Q
6th Week of Development Changes
A
- Spontaneous movement
- umbilical herniation
- heart prominence
- hand plates and digital rays
- Auricular hillocks forms between 1st and 2nd pharyngeal arches
4
Q
7th Week of Development Changes
A
- Notches between digital rays
- Yolk sac becomes omphaloenteric duct
- Upper limb bone ossification
5
Q
8th Week of Development Changes
A
- fingers separate
- notches in feet digital rays
- scalp vascular plexus forms band around head
- primary ossification in femu
- purposeful limb movements
