Skin (Module 2) Flashcards Preview

Histotechnology MEDL 310 > Skin (Module 2) > Flashcards

Flashcards in Skin (Module 2) Deck (8)
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1

What are the 4 major functions of the skin?

Protection, Sensation, Thermoregulation, Metabolic functions.

2

What are the 3 layers of the skin?

Epidermis, dermis, subcutis or hypodermis

3

Slooughed off continually at the free surface

Keratin

4

-compact layer of soft keratin
-flat scales
-anucleate
-desmosome attachment
-waterproof

Stratum Corneum

5

-barely distinguishable
-flattened cells, mostly cell membrane
-translucent cytoplasm
-nuclei undergoing karyolysis
-think skin only

Stratum Lucidum

6

-few layers
-flattened cells
-basophilic granules of keratohyaline

stratum granulosum

7

-several layers
-polyhedral
-artifactual gaps with filaments give rise to the name prickle cells
-Langerhans cells are prominent.

Stratum Spinosum

8

-Single layer
-cuboidal or low columnar
-mitotic figures may be seen
-hemidesmosomes attach to basement membrane
-desmosomes attach to each other
-melanocytes are found between keratinocytes
-Merkel cell sparsely scattered

Stratum Basale or Stratum Germinativum.