Exam 4 - Skin Flashcards
1
Q
Parts of the integument
A
- skin
- hair
- nails
- glands
2
Q
Functions of integument
A
- protection
- sensation
- temperature regulation
- Vitamin D production
- excretion
- immunity
- barrier to UV light
3
Q
Epidermis blood flow
A
Avascular - nourished by diffusion from capillaries of the PAPILLARY LAYER of the dermis
4
Q
Stratum Basale
A
- single layer to dermis
- closest to dermis
5
Q
cell types in Stratum Basale
A
- STEM CELLS: will undergo mitosis to replace epidermal KERATINOCYTES
- MELANOCYTES: distribute melanin through cell processes; melanin picked up by keratinocytes
- MERKEL CELLS: touch receptors
6
Q
Several layers of KERATINOCYTES which APPEAR SPINY during histological preparation EXCEPT FOR DESMOSOME CONNECTIONS
A
Stratum Spinosum
7
Q
cell types in Stratum Spinosum
A
Dendritic (Langerhans) cells
- macrophages from bone marrow that migrate to the epidermis
