BIO 190 - Integumentary System Flashcards
1
Q
What are the functions of the skin?
A
- excretion
- protection
- sensory
- synthesis of vitamin d
2
Q
integumentary system
A
see chart
3
Q
epidermis
A
- avascular
- stratified squamous
4
Q
dermis
A
- areolar and adipose tissue
- collagenic and elastic fibers
- dense connective tissue
- vascular
- sensory receptors
5
Q
subcutaneous layer
A
- adipose
- vascular
6
Q
keratinocytes
A
- keratin, tough fibrous protein
7
Q
Langerhans cells
A
- phagocytic immune response
- foreign pathogens, damaged cells
8
Q
Merkel cells
A
- fine and light
- hands and feet
9
Q
melanocytes
A
- secreted
- melanin
10
Q
papillary layer
A
- produces fingerprints
11
Q
Meissner’s/tactile corpuscles
A
- pain and touch
12
Q
dermal papillae
A
- extension, interlocks to epidermal layers
- bumps and ridges
13
Q
reticular layer
A
- elastic
- blood vessels
- sweat and sebaceous glands
14
Q
Pacinian corpuscles
A
- pressure
- vibration
- deep touch
15
Q
apocrine glands
A
- nervous/stress
- axillary, groin, nipple
- pheromones
- milky protein, fat rich substance
16
Q
eccrine glands
A
- sweat
- all over body
- clear perspiration, mostly water and salts
17
Q
hair follicle
A
where root of hair is enclosed in
18
Q
arrector pili muscle
A
- stand up, insulate
- fight or flight
19
Q
sebaceous gland
A
- secrete sebum into hair follicle
- lubricates
20
Q
nail bed and root
A
nail bed above, root below and embedded in skin
21
Q
lunula
A
moon shape on nail
