CHAPTER 12 Flashcards
what provides support to the ECM
collagen
defining animal charachterists
-sexual reproduction
-diploid life style
4 embryo stages
- Fertilization
- Cleavage
- Gastrulation (in almost all animals)
- Organogenesis (in almost all animals)
fertilization can be…
internal and external
totipotent
the ability to divide and form an entire organism
blastula
sphere of cells as a result of cleavage
blastocoel
central cavity of blastula
Archenteron
the inside of the Gastrulation thing
Endoderm
second layer of the Gastrulation thing
Blastocoel
third layer of the Gastrulation thing
Ectoderm
outer layer of the Gastrulation thing
Invagination
Sheet of cells bulges inward
Involution
Sheet of cells rolls over itself
Opening to archenteron is called…
blastopore
blastopore develops into what
mouth and or booty
coelom
internal cavity and structures
Organogenesis
Development of individual organs
Invagination creates what
blastopore
notochord
induces folding of ectoderm cells above
somites form what
vertebrae & muscles