Embyoidology Flashcards
1
Q
what is A/P axis?
A
anterior and posterior/head and tail
2
Q
what is the D/V axis?
A
dorsal and ventral/upper and lower
3
Q
what is the P/D axis?
A
proximal and distal
4
Q
what is the placode?
A
ectodermal thickening over a developing structure
5
Q
what is an anlage?
A
cluster of embryonic cells from which a structure develops
6
Q
what is epigenesis?
A
a theory of development that states that new structures arise by progression
