skin P2 Flashcards
1
Q
where do you not find hair on the body
A
- palms
- soles
- lips
2
Q
what is produced in a hair follicle
A
- dead keratinized cells
3
Q
what is the accetor pili muscle
A
- a tiny muscle that attaches to the base of a hair follicle at one end and to dermal tissue on the other end.
- causes contractions ‘goosebumps’
- improves insulation
4
Q
describe what root hair plexus are
A
- a collection of sensory nerves at the base of each hair follicle
- heightens sensation
5
Q
describe what functions sebaceous glands have
A
- produce sebum
- nourishes hair shaft
- naturally moisturizes skin
- water repellent
6
Q
what are apart of the accessory structures of hair
A
- arrector pili muscle
- root hair plexus
- sebaceous glands
7
Q
what are the accessory structures of sweat glands
A
- eccrine
- apocrine
8
Q
describe eccrine and functions
A
- found in most areas of the skin
- pour water secretions (directly onto skin surface)
- important for thermoregulation + excretion
- some antibacterial action
9
Q
describe apocrine and function
A
- found in armpit, groin, and around the nipples
- secretes sticky/oily odorous secretions into base of hair follicles
- influenced by hormones
10
Q
what are apart of the accessory structures of receptors
A
- tactile
- lamellar
- bulbous
11
Q
what are apart of the accessory structures of nails
A
- protect fingertips/toes
- enhance sensation as it is a backboard
- sensation receptors require deformation
12
Q
what happens to the skin when it ages
A
- epidermis and dermis thins (reduced collagen)
- slower skin repair
- drier epidermis (less sebum)
- impaired cooling (takes longer to cool down)
- less pigmentation
13
Q
what happens to the skin if you are a smoker
A
- premature aging
- accelerates aging
- damages melatonin, collagen and elastin
- ## poor healing
14
Q
what are melancytes
A
- makes melanin + puts it into the melanosomes
15
Q
what is melanin
A
- is a pigment that absorbs UV light
- protects cells from UV damage
