basics Flashcards
what typf of epithelium makes up the epidermis?
stratified squamous epithelium
what are the cells of the epidermis?
basal cells
melanocytes
Langerhans cells
Merkell cells
keratins
what is the role of melanocytes?
pigment producing dendritic cells
tyrosine -> melanin
what are melanocytes derived from?
neural crest at basale
what are Langerhans cells?
antigen presenting cells (dendrites)
where are Langerhans found?
at spinosum
what are Merkell cells?
mechanoreceptors
where are Merkell cells found?
basale
what are basal cells made of?
keratinocytes
what are specialised keratins?
hair follicles and nails
what are dermo-epidermal junctions held together by?
collagen fibres
dermal papilla
what is dermis made of?
collagen and elastin (connective tissue)
what does dermis consist of?
blood and lymphatic vessels
somatic sensory nerves
hair follicles
what somatic sensory nerve feels pressure?
pacinian
what somatic sensory nerve feels vibration?
Meissners
what type of hair follicle produces sebum?
sebaceous glands
- lubrication and anti-infections
what hair follicle produces axilla sweat?
apocrine (androgen-dependent)
what hair follicle is responsible for normal sweat glands?
eccrine
