​-Protection (brain, heart, lungs)
-Support
-Movement (with muscles)
-Mineral Storage
-Blood production

Functions of Skeletal System

How many bones do we have?

Babies- 300
Adults- 206

Major Bones You Need to Know

Skull
Vertebrae/Spine
Rib Cage
Pelvis
Humerus
Clavicle

Radius
Ulna
Femur
Tibia
Fibula
Phalanges

Scapula
Mandible(Jaw)
Patella
Sternum
Sacrum

What are Joints?

Joints are places where two bones meet.
They allow for:
-Movement
-Flexibility

Two Types--Movable and Immovable

Hinge Joint

Allows for bones to move back and forth.

Found at the:
-Knee
-Elbow

Ball and Socket Joint

Allows for bones to move in all directions.

Found at the:
-Shoulder
-Hip

Pivot Joint

Allows rotation

Found at the:
-Neck

Gliding Joint

Allows bones to slide past each other.

Found at the:
-Wrist
-Ankle

Ligaments

Connects bones to other bones

Tendons

Connecting tissue that joins muscles to bones and muscles to muscles.

Help stabilize joints and keep them from moving out of place.

Cartilage

Allows joints to move easily

Cushions bones

Supports soft tissue

Problems of the Skeletal System

Fractures (broken bones)
Arthritis (joint inflammation)
Osteoporosis (weak, brittle bones)
Scoliosis (curves spine)

What causes Skeletal Problems?

Accidents/Injuries
Poor Nutrition
Lack of Exercise
Poor Posture
Aging

How to keep the System Healthy

Calcium
Vitamin D
Weight-bearing exercise
Good posture
Safety gear in sports