Tissue - Development Flashcards
1
Q
3 primary germ layers
A
Superficial to deep: 1) ectoderm 2) mesoderm 3) endoderm Specialize to form 4 primary tissues
2
Q
Epithelial tissue development
A
Mucosae (endoderm)
Epidermis (ectoderm)
Endo/mesothelium (mesoderm)
3
Q
Muscle/connective tissue development
A
Mesoderm
4
Q
Nervous tissue development
A
Ectoderm
5
Q
By end of 2nd month:
A
All primary tissues are developed
Major organs are in place
Tissue cells can reproduce
Nervous cell division stops
6
Q
In adults, only:
A
Epithelia & blood forming tissues can reproduce
7
Q
As you get older:
A
Epithelia thins
Collagen levels drop
