Acne

• AKA acne vulgaris;
• skin disorder/chronic inflammation of sebacous glands
• from retained secretions and Propionibacterium  

Arrector Pili Muscle

• small involuntary muscles
• base of hair follicle
• cause goosebumps/papillae

Callus

• thickening of skin
• caused my repeated pressure
• especially hands/feet

Dermal Pappilae

• small cone shaped elevations
• base of hair follicle
• fit into hair bulb

Eumelanin

•  dark brown-black melanin
• people with dark skin tones 

Melanin

• tiny pigment grains
• produced by melanocytes
• deposited into cells in Strat.Germ/pap layers of the dermis
• pheomelanin, eumelanin

Papillary Layer

• outer layer dermis
• beneath epidermis

Papule

• aka Pimple
• contains no fluid may develop pus

Pheomelanin

• red to yellow melanin
• light color skin most common producers

Propionibacterium Acnes

• aka -P acnes 
• acne bacteria 

Pustule 

• raised pus containing head of a pimple/papule 

Sebum

• oil section 
• lubricates skin
• preserves softness of hair

Secretory Nerve Fibers

• fibers that are distributed to the sudoriferous/sebacous glands
• autonomic nervous system
• regulate sweat and oil 

Stratum Germninativun

• aka- Basal cell layer
• deepest live layer of epidermus
• produces new skin cells
• responsible for growth

Tactile Corpuscles

• small epidermal structures with nerve endings
• sensitive to touch/pressure