6.3- Repair and Regeneration and Development and Aging of the Integumentary System Flashcards
1
Q
Two types of tissue repair
A
regeneration and scar tissue
2
Q
Fibrosis
A
The deposition of scar tissue in connective tissue.
3
Q
Where does the epidermis come from?
A
Ectoderm germ layers.
4
Q
Where does the dermis come from?
A
Mesoderm germ layers.
5
Q
By week seven of development, what happens with the ectoderm?
A
Forms a layer of squamous epithelium that flattens and become the covering layer called perderm and an underlying basal layer.
6
Q
Vernix caseous
A
Waterproof layer that covers the fetus and is made by the sloughed off perderm and secretions of sebaceous glands.
7
Q
During weeks 3-8 mesoderm becomes?
A
Mesenchyme, and then these begin to form elements of the dermis at week 11.
