Lab 7
Keratinocytes
an epidermal cell that produces keratin.
The superficial region of the skin is the ______ composed of____________ tissue
epidermis, underlying connective
the deeper region tissue is the _________ composed of connective tissue
hypodermis
The most numerous cell of the epidermis is the
keratinocytes
dermal layer responsible for fingerprints
papillary dermis
Two primary layers of the epidermis are the ________ dermis composed of areolar connective tissue and _______ dermis composed of dense re3gular connective tissue
papillary, reticular
deep layer of dermis
reticular dermis
Epidermal layer exhibiting the most rapid cell division location of melanocytes and tactile epithelial cells
stratum basil
Layer including scalelike dead cells full of keratin that constantly slough off
stratum corneum
layer named for the numerous granules present layer that secretes a glycolipid that prevents water loss from the skin
stratum granulosum
layer of translucent cells in thick skin containing dead keratinocytes two layers containing dead cells
stratum lucidum
area where weblike per-keratin filaments first appear
stratum spinosum
4 protective functions of the skin
1. protects from infection 2. reduces water loss 3.regulates body temp 4. protects from UV rays