dermis

dermis

two layers papillary layers reticular layer

lamellar corpuscles

deep pressure receptors phagocytes prevent bacteria

reticular layer

deepest skin layer, irregulary arranged connective issue lamellar corpuscles collagen fibers elastic fibers

sebaceous glands

found all over except palms of our hands produce oil most active during adolescence

dermal papillae

furnish nutrients through the capillary loops house pain receptors and touch receptors of palms of hands and soles of feet

elastic fibers

give the skin its elasticity when we are young, as we age collagen and elastic fibers decrease and the subcutaneous tissue loses fat, causes our skin to sag and wrinkle

hair follicle

hardened keratenized epithelial cells

hair root

hardened keratenized epithelial cells

nails

hardened keratinized cells

hypodermis

not part of skin located subcutaneously attaches skin to muscle adipose connective tissue

dermal papillae

nourishes epidermis through capillary loops

papillary layer

nourishes epidermis through capillary loops withing capillary layers dermal papillae pain/touch receptors capillary loops

collagen fibers

responsible for the toughness of the dermis, they attract and bind water to help keep the skin hydrated

hair follicle receptor

root hair plexus

arrector pili

smooth muscle cells activate when we are frightened or cold (errection)

appocrine

sweat gland duct opens into hair follicles respond to pain/ stress ans sexual foreplay found in axillary and pubic regions

eccrine

sweat gland duct opens to skin pores respond to heat found all over the body