Skin Flashcards
What is the function of keratin?
To reduce heat loss and prevent dehydration.
What is the predominant cell type in the epithelium?
Keratinocytes.
What is desquamation and why does it occur?
What is the name of the proteins which anchor one cell to another?
Desmosomes.
Where is the water barrier found on the epithelium?
How is it formed?
Produced at the stratum granulosum.
Explain the undulations between the epidermis and dermis and why it is is important.
What are the 2 structures which are important?
What structure adheres the basal cell to the dermis?
What are the important proteins found on these structures, what are the proteins found in the basal lamina?
Hemidesmosome.
Integrins: transmembrane adhesive protein which bind to lamanin.
Lamanin: adhesive proteins found in basal lamina.
What cell is important in pigmentation of the skin?
Where are they found?
What does it produce?
Melanocyte: reduces UV damage to skin.
What does a Langerhans cell and a Merkel cell do in the epidermis?
What are the different layers of the dermis?
What is the dermis made of?
Fibrous connective tissue.
What is the hypodermis made of?
What is its function?
What is the name of the touch receptor? Where is it found?
Meissners corpusle: touch in the dermal papillie.
What is the pain and temperature receptors in the skin?
Where are they found?
Free nerve endings penetrating the epidermis.
What is pressure sensed by in the skin?
Where is it found?
What is the muscle in the skin and what does it do?
Erector pilli: smooth muscle which is associated with hair.
