-
-
-
-
-
-
-
diaphor/o
profuse sweating
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-tome
instrument for cutting
-
allo-
other; different from usual
-
-
organs of the integumentary system:
- nails
- sweat glands
- sebacious glands
- hair
- skin
-
-
primary functions of skin
- protection against pathogens and chemicals
- protection of organs and fluids inside body
- temp regulation (sweat, blood vessel contraction/dilation, fat layer)
-
sensory receptors:
in the skin, detect pain, temp, touch and pressure and convey messages to the spinal cord and brain
-
sebacious glands
oil glands that produce lubrication for the skin
-
epidermis
thin, outer membrane of skin with no blood supply or connective tissue
-
dermis
- middle, fibrous, connective tissue layer of skin
- aka: corium
- living tissue with good blood supply
-
subcutaneous layer
- innermost layer of skin containing fatty tissue
- aka: hypodermis
- composed of fat cells (lipocytes)
-
stratified squamous epithelium
flat, scale like cells arranged in overlapping layers which compose the epidermis
-
basal layer
- deepest layer of epidermis
- new cells in formed here push older hardened cells to surface
-
melanocytes
cells loc'd in the basal layer which contain the skins pigment, melanin
-
keratin
hard protein substance found in hair, nails and inside of epidermal cells
-
collagen fibers
made of strong, fibrous protien which forms the "glue" that makes connective tissue strong
-
8 things found in the dermis:
- hair follicles
- sweat glands
- sebacious glands
- blood vessels
- lymph vessels
- sensory receptors
- nerve fibers
- muscle fibers
-
epidermal-dermal junction
- specialized area btwn 2 primary skin layers
- blisters are caused when there is a disconnect at this junction
-
hair follicles
tube like structure under surface of skin where hair root is found
-
hair shaft
visible part of hair above skin surface
-
sebacious glands in hair release oil into:
hair follicle
-
meissners corpuscle
detect light touch to skin
-
pacinian corpuscle
detects pressure to skin
-
arrector pili
- smooth slip of muscle attached to each hair
- when contracted, hair shaft stands up (goose bumps)
-
nail body
flat plate of keratin that forms visible part of finger/toe nails
-
nail bed
connective tissue that connects the nail body to the tissue underneath
|
|