Integument Flashcards
Stratum Corneum
Dried flakes of keratin
Top layer
Stratum lucidom
Appears clear
First dead layer
No nuclei
Stratum granulosum
Visible granules of of keratin, last living layer
Stratum spinosum
Layer of living cells, producing keratin - spiky appearance
Stratum basale (germinativum)
Layer of dividing cells
Melanocytes
Produce melanin
Injection melanin into neighboring cells
Protects nuclei from damage by UV light
Keratinocytes
Produce keratin
Provide physical and mechanical protection
Produce antibiotics and enzymes that detoxify the harmful chemicals
Papillary dermis
20% of the dermis
Areolar Connective Tissue with thin collagen and elastic fibers
Layers of Dermis
Papillary
Reticular
Layers of Epidermis
Stratum Corneum Stratum Lucidom Stratum Granulosum Stratum Spinosum Stratum Basale
Dermal papillae
Fingerlike projections that extend into the overlying epidermis
After basale
Sudoriferous glands
Sweat glands
Sebaceous Glands
Produce oil
Hair Follicles
Extend from epidermal surface into the dermis
Dermal Papillary
Nipple like bit of the dermis that protrudes into the hair follicle
