Skeletal System

ByMrs. Genetta Spratt

Skeleton• There are 206

bones in an adult body.

• Bones give your body shape and help you move.

• Bones are not easily broken.

• If broken they can repair themselves.

Skull

• Made up of 28 bones.

• Protects the brain.• The skull gives

your face shape.

Bones in Your Hand

• Inside your hand there are 27 separate bones.

• Humans have two hands.

• Bones in the hand are called metacarpals.

• The bones in the fingers are called phalanges

Bones in Your Feet• The foot has 26

bones making up the heel, ankle, body and toes.

• The main body of the foot is called metatarsals.

• The toes are called phalanges.

Ribs• 12 pairs of ribs.• They are

connected to the breast bone with flexible cartilage allowing the rib cage to expand as you breath.

• Protect the lungs and heart.

Vertebrae

• There are 26 vertebra that extends from brain to tail bone.

• Vertebra are separated by a cartilage that keeps the bones from grinding on each other.

Types of Joints

• Hinge joint works like opening and closing a door. Allows body parts to bend and straighten.

( Elbow, knee, ankle) • Ball and Socket joints twist and

turn. Allows movement in any direction.

(Shoulder, hip)• Gliding joints allow flat bones to

slide over each other. (Foot, wrist)• Condyloid joints allow the head

to nod and fingers to bend.

The End