Epidermis

Question 1

Epidermis

Answer 1

Made up of five layers on thick skin and 4 on thin skin

Question 2

Stratum Corneum

Answer 2

-outmost protective layer
-keratin protein: waterproof the skin)
-avascular (no blood)

Question 3

Stratum Lucidum

Answer 3

-only in thick skin
-create fingerprints

Question 4

Stratum Granulosum

Answer 4

-several layers of skin held together through desmosomes
-storage for keratin

Question 5

Stratum Spinosum

Answer 5

-8 to 10 cells thick connected by desmosomes
-Langerhans cells: macrophages that assist the immune system
-keratinocytes that help with mitosis

Question 6

Stratum Basale

Answer 6

-single layer of column cells
-produce live cells by mitosis
-keratinocytes and melanocytes
-helps with production of vitamin D
-Merkel disks (touch)