chapter 6 integumentary

Question 1

cells types in epidermis

Answer 1

keratinoctyes, melanocytes, dendritic (langerhans) cells, tactile/merkle cells

Question 2

keratinocytes

Answer 2

produce keratin, most cells of epidermis, tightly connected by desmosomes

Question 3

melanoctyes

Answer 3

10-25% of cells in deepest epidermis, make melanin, protect from uv dmg.

Question 4

dentritic cells (langerhans)

Answer 4

macrophages, activators of immune sys. help fight inflection in the epidermis

Question 5

stratum basale

Answer 5

firmly attatched to dermis, single row of stem cells, melanoctyes compose a large chunk of this layer, has tactile and keratinocytes as well

Question 6

stratum spinosum

Answer 6

prickly layer

Question 7

stratum granulosum

Answer 7

cells flatten, keratinization begins, cells above this layer die, nuceli and organelles disinatgrate

Question 8

stratum lucidum

Answer 8

only in thick skin translucent band