Bio2: Epidermis Review

Place the following epidermal layers in order from superficial to deep.

• stratum corneum

• stratum lucidum

• stratum granulosum

• stratum spinosum

• stratum basale

Label the 2 main cell types of the epidermis.

a

b

melanocyte

keratinocyte

Label the diagram with the terms provided.

a

b

c

epidermis

dermis

hypodermis

Label the diagram with the terms given.

c

d

e

f

b

a

dermis

stratum basale

stratum granulosum

stratum corneum

stratum spinosum

stratum lucidum

Match the epidermal layers to their description.

• visible "granules" of keratin

• stratum granulosum

• growing layer at the base

• stratum basale

• dead, hard, dry, flat cells; surface

• stratum spinosum

• only present on palms/soles

• stratum corneum

• connections make cells appear spiny

• stratum lucidum

Keratin is: (choose all that apply)

• the pigment that causes skin color

• the protein that dries and hardens cells

• produced by most epidermal cells

Tags

NGSS.MS-LS3-1

Melanin is: (choose all that apply)

• the pigment that causes skin color

• the protein that dries and hardens cells

• produced by most epidermal cells

• injected into the keratinocytes

• made by melanocytes

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

Choose all layers found in THIN EPIDERMIS.

• stratum corneum

• stratum lucidum

• stratum granulosum

• stratum spinosum

• stratum basale

Choose all layers found in THICK EPIDERMIS.

• stratum corneum

• stratum lucidum

• stratum granulosum

• stratum spinosum

• stratum basale

Match the descriptions of the skin layers to the correct location on the diagram.

a

b

c

made of fat

made up of 4 or 5 "stratum" layers

strong & stretchy; has BVs