Skin Flashcards
What are the two layers of skin called?
Dermis and epidermis
What is the layer below the skin called?
Hypodermis/subcutis
Which type of skin is glabrous (not hairy)?
Thick skin
What type of epithelium is the epidermis made up of?
Stratified squamous epithelium
How many layers does the epidermis have and what are they called?
Five if thick, four if thin
Basal/germinal layer, spinous/squamous layer, granular layer, clear/translucent layer, cornified layer
Which layer of epidermis isn’t present in thin skin?
Clear/translucent layer
What cells are present in the basal/germinal layer of epidermis?
Proliferating and non-proliferating keratinocytes, melanocytes, merkel cells
What cells are present in the spinous/squamous layer of epidermis?
Keratinocytes connected by desmosomes, Langerhans cells
What cells are present in the granular layer of epidermis?
Keratinocytes - without nuclei and have granular cytoplasm
What cells are present in the clear/translucent layer of epidermis?
Dead flattened keratinocytes
What cells are present in the cornified layer of epidermis?
Anucleated corneocytes (attached by corneodesmosomes)
What are melanocytes?
Pigment cells
What are Langerhans cells?
Immunological
What are Merkel cells?
Mechanoreceptors
What are the two layers of dermis called?
Papillary layer and reticular layer