the human skeleton. your skeleton’s 3 main jobs: 1. your skeleton gives you your shape. if you...

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The human skeleton

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Page 1: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

The human skeleton

Page 2: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Your skeleton’s 3 main jobs:

1. Your skeleton gives you your shape. If you didn’t have a

skeleton, you would be a blob!

2. Your skeleton helps you to move. You could not run or swim without bones.

3. Bones protect other parts of your body.

Page 3: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Skeleton fact

• A baby is born with over 300 bones but some bones grow together so that all grown ups have 206 bones.

Page 4: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

The longest, heaviest, and strongest bone in your body is your thigh bone, called your femur! It attaches at your hip and your knee!

• (The smallest bone is in your ear!)

Page 5: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Your kneecap is your patella

• On the front of the knee is the kneecap. Your kneecap is not connected directly to other bones. Muscles and tendons help keep your kneecap in place!

Page 6: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Your skull

• Knock on your skull and feel how hard it is. It is hard so it can protect your brain and eyes. The skull is made up of 28 bones.

• Muscles are attached to your skull to help you smile!

Page 7: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Muscles

• Muscles are attached to bones. Bones and muscles work as teams when you swing your arms and move your legs.

Page 8: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Ball and socket joints• Bones meet at joints.

• Make a fist and put your fist in your open hand. This is how a ball and socket joint works.

• Your shoulders and hips are ball and socket joints.

Page 9: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Hinge joints

• Hinge joints are like door hinges. Picture a door swinging open. Hinge joints allow bones like your elbows and knees to swing back and forth. Your knee locks when its straight and doesn’t bend backwards.

Page 10: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Broken bonesBones are tough, but they can break. Fortunately, broken bones can heal. Special cells help repair the bone. How fast a bone heals depends on the kind of break. If the broken ends fit together well, a bone may heal more quickly.

Page 11: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Your backbone

• Your backbone, or your spine, helps support your body. It is made up of bones called vertebrae.

Page 12: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Your ribcage

• You have 12 pairs of ribs that are curved bones.

• Your heart and lungs are protected by your ribcage.

Page 13: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Your arm bones• Your upper arm bone is called

your humerus.

• Your lower arm bones are the ulnaand radius

Hitting your “funny bone” usually isn’t funny at all. There is a nerve that runs over the ulna that makes hitting it painful!

Page 14: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Your hands and feet

• Your hands have 27 bones in each! Your hands and wrist are easy to control because they have so many movable bones.

Page 15: The human skeleton. Your skeleton’s 3 main jobs: 1. Your skeleton gives you your shape. If you didn’t have a skeleton, you would be a blob! 2. Your skeleton

Taking care of our bones

• Bones give us shape and allow us to move so taking care of our bones is important. The key to healthy bones is eating well and exercising.

• Our bodies need calcium to grow strong bones. Milk and broccoli are good sources of calcium.