Skin Hair Nails

What is the top layer of skin called

• callus

• dermis

• epidermis

• subcutaneous

What layer of the skin senses pain

• callus

• dermis

• epidermis

• subcutaneous

what is the oily substance that protects the skin against water called

• seaweed

• sebum

• skin

• sensory

Which is not a function of the skin

• insulation

• excretion

• movement

• Vit D production

One of the unique things about the basal layer of the epidermis is

• mitosis

• pink colour

• meiosis

• blood supply

Tags

NGSS.HS-LS1-4

Nail is mainly composed of

• Keratin

• Matrix

• Hair

• Nerves

The portion of the skin on which the nail rests

• Nail bed

• nail plate

• matrix

• nail fold

Rest on and is attached to the nail bed

• nail bed

• nail plate

• matrix

• nail fold

Where the nail plate extends over the edge of the digit

• nail plate

• matrix

• Eponchium

• free edge

The matrix is a ?

• thickening of the nail bed

• living layers of the epidermis

• pink and visible capillary network

• small projections