How The Body Works

Eyes
Notes:

• The color in your eye is called the Iris.
• An eye is about the size of a ping pong ball.
• Cones help us see color.
• Rods help us see shades and form shapes.
• Cones and rods work together to help us see the total picture.
• When an image hits the retina its upside down, the brain flips the image the right way around. 
• The biggest part of the eye is the vitreous body which also gives the eye its shape.
• The optic nerve is the great messenger at the back of our eye. 

Teeth

Notes:

• Enamel cover the crown of the tooth to make it hard, tough and shiny.
• Teeth help you eat and talk.
• The white part of your teeth are called the crowns 
• The pulp contains nerves which sends messages to the brain if something it too hot or too cold.
• The root protects the dentin
• Cementum is the thing that attaches the teeth to the jawbone.
• Canine teeth are shape, pointy and made to tear food.
• Wisdom teeth are the last four teeth we get
• Babies have primary teeth 
• Molars are the teeth that help us grind our food.

Bones

Notes:

• The stirrup is the smallest bone in your 
• Their are 206 bones in an adult human body
• The rib cage protects your heart, lungs and liver
• There are 33 bones in the spine
• Bone marrow is in the centre of your bones
• The skull protects your brain
• Bones meet at joints
• Vertebrae is in the spine
• The patella in located in the knee
• Your bones wont stop growing until age 25