Integumentary System

Question 0

Why do you need skin?

Answer 0

• keep water in your body and foreign particles out
• nerve endings let you feel things around you
• regulate temp with sweat glands. As sweat evaporates, skin cools
• skin gets rid of waste through sweat

Question 1

What is the integumentary system made of?

Answer 1

Skin, hair, and nails

Question 2

What is melanin?

Answer 2

Melanin gives skin it’s color and absorbs ultraviolet light from the sun

Question 3

Epidermis and dermis

Answer 3

Epidermis is the outer layer

Dermis is thick under layer

Question 4

Epidermis

Answer 4

Most cells in epidermis are dead

The cells are filled with protein called keratin that helps make skin tough

Question 5

Dermis

Answer 5

Has fibers made of the protein collagen

The fibers provide strength and let the skin bend without tearing

Question 6

Hair

Answer 6

Hair forms at the bottom of a sac called a hair follicle
Hair gets its color from melanin
Hair protects from UV light and keeps out foreign particles
They help regulate body temp

Question 7

Nails

Answer 7

Nails grow from a nail root

Nails protect fingers and toes so they can be more sensitive to touch

Question 8

Skin injuries

Answer 8

Skin can be cut, but repairs itself easily with blood clots
It can get cancer from UV rays
You can get acne from oils that clog hair follicles