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Test 1

Anatomy of Skin

QuestionAnswer
Name the 3 layers of skin Epidermis, dermis, hypodermis
What main kind of epithelial cells make up the epidermis Stratified squamous epithelial cells
Define stratified Multiple layers
Why is skin waterproof? Keratin made by keratinocytes
How long do keratinocytes live 4-6 weeks
What are the 4 layers (5 with thick skin) of the epidermis Stratum: corneum, lucidum, granulosum, spinosum, basale
What epidermal layer makes keratin Stratum granulosum
What layers of the epidermis are dead Stratum corneum (and lucidum in thick skin)
What is the thinnest layer of the epidermis Stratum basale
Where are melanocytes found Stratum basale
What is the highly mitotic layer of the epidermis Stratum basale
Melanocytes deep down to protect their ___ DNA
What affects skin colour Melanin production by melanocytes stimulated by sunlight
What do Langerhan cells do Immune cells that are macrophages
Where are Langerhan cells mostly found Stratum spinosum (but also in papillary dermal layer and lymph nodes)
What are Merkel cells Tactile cells - found deep in epidermis
What does Vitamin D do in relation to keratinocytes Vitamin D influences keratin production
Are Merkel Cells for light or deep touch Light touch
What are the light touch receptors in the dermis layer called Meissner's corpuscles
What are the 2 parts of the dermis Papillary dermis and reticular dermis
What is the purpose of the Pacinian corpusle Deep touch/deep pressure receptor
Where are Pacinain corpuscles located Deep dermis or hypodermic layer
Created by: karinnp
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