Skin

• Know the layers of the epidermis: stratum germinativum, stratum spinosum, stratum granulosom, (two types of granules-keratohyalin and lamellar), stratum lucidum (thick skin only), stratum corneum

• Melanocyte cell – clear cell in the germinativum (not the pigmented one which is a melanophore)

• Dermis has two layers: papillary layer (loose areolar CT) and reticular layer (dense irregular CT)

• Sweat ducts-stratified cuboidal,* myoepithelial cell – squamous cell that wraps around the outside of the sweat duct (squeezes out the sweat-gross!)

• pacinian corpuscle – looks like an onion, found in reticular layer of dermis, deep pressure and vibration receptor

• Meisner’s corpuscle – sort of S-shaped, found in the papillary layer, touch receptor

Neurovascular bundle – just what the name implies, a cross-section of nerve with a vein and arteriole. Found deeper in dermis, not on all slides, may or may not be associated with a pacinian corpuscle

Hair follicle with sebaceous gland – thin skin only (unless you are some sort of mutant that has hair on your palms!)

Category: Anatomy Notes