A&P exam 2 Flashcards
upper layer of dermis
papillary region
lower layer of dermis
reticular region
loose connective tissue that largely makes up hypodermis
adipose
- outer layer infused with keratin
- has living cells, but avascular
epidermis
- layer made up of loose connective tissue
-papillary and reticular regions
- vascular
-hair follicles, sensory nerves, etc.
dermis
- blood flow specific to face
- embarrassment or anger
blushing
- general increase of blood flow
- due to exertion or illness
flushing
reduced blood flow due to fear or extreme stress
blanching
inflammatory response due to overexposure to UV radiation
sunburns
-dermal structure that grows a hair
-infused with keratin and melanin
hair follicles
lose of pigment in hair due to dwindling melanocytes
achromotrichia
made of keratin, derivation of claws
nails
pulls on hair follicles to make hair stand
arrector pili muscles
secrete oil
sebaceous glands
skin oil that adds protective layer to skin
sebum
-felt consciously
-feel pain, temp, etc.
somatosensation
cutaneous neuron that senses pressure
tacile corpuscle
senses pressure and location of body parts
pacinian corpuscle
loss of collagen, lose of adipose tissue
changes in skin with aging
hard, connective tissue
bone mineral + collagen + living component (cells)
bone
nonliving component of bone
extracellular matrix
bone mineral
fibrous protein
makes bones flexible
bone collagen
secrete calcium and phosphate into fluids to create bone
may become osteocytes
osteoblasts
maintain bone
25 year life
lower activity
live inside bone
osteocytes
projections of osteocytes
canaliculi