Skin and Body Membranes 3 Flashcards
Two layers in dermis
Papillary layer
Reticular layer
Projections called dermal papillae
Pain receptors
Capillary loops
papillary layer
Blood vessels
Glands
Nerve receptors
reticular layer
types of fingerprints
whirl
arch
loop
Not part of the skin
Anchors skin to underlying organs
Composed mostly of adipose tissue
hypodermis
Produce oil
Lubricant for skin
Kills bacteria
Sebaceous glands
Widely distributed in skin
Sweat glands
Two types of sweat glands
Eccrine
Apocrine
Open via duct to pore on skin surface
Eccrine sweat gland
Ducts empty into hair follicles
Apocrine sweat gland
Composition of sweat
Mostly water
Some metabolic waste
Fatty acids and proteins (apocrine only)
Function of sweat
Helps dissipate excess heat
Excretes waste products
Acidic nature inhibits bacteria growth
____ is from associated bacteria
Odor
Produced by hair bulb
Consists of hard keratinized epithelial cells
hair
___________ provide pigment for hair color
Melanocytes