1. The Integumentary System
EQ: How do an organism’s systems interact to carry out life processes?

2. Who Am I??? I have to be partly dead to keep you alive
I come in many colors
I am the first line of defense in protecting you from disease
I help you maintain homeostasis
I am the largest organ of your body
I am showing right now
Your skin!

3. Organs/Parts and Functions
Your skin, hair and nails make up your integumentary system.
The integumentary system is all about protection.
Protects from disease
Protects from physical damage
Protects from dehydration, freezing, and overheating
The integumentary system covers your body and helps it maintain homeostasis!

4. Skin Your skin is your largest organ.
It makes up 15% of your total body weight.
It comes in many colors
The color of skin is determined by a chemical called melanin.
More melanin = darker skin.

5. Functions of Skin
Skin protects you by keeping water in your body and foreign particles out of your body.
Skin keeps you in touch with the outside world. Nerve endings on your skin let you feel things around you.
Skin helps regulate your body temperature. It can sweat to cool you off or surround a layer of fat to keep you warm.
Skin helps get rid of wastes.

6. Two Layers There are two main layers of skin:
The epidermis, or the outermost layer of skin. Tough and waterproof, it is only as thick as two sheets of paper.
The dermis, or the of skin below the epidermis. Made of a layers of a protein called collagen, it is thick and strong. It contains the sweat glands, nerve fibers, blood vessels, hair follicles, and muscle fibers.

7. Hair and Nails
Hair and nails are an important part of the integumentary system.
They are made of living and dead cells.
Hair protects the skin from harmful UV rays.
Hair also keeps dust particles and insects out of your eyes and nose.
Hair also helps you regulate your body temperature.
Nails protect the tips of your fingers and toes so that they can be used as sensory tools.

8. https://www. schooltube
8c1f/Skin%20--%20by%20Bill%20Nye