What do you know about BONESBONES ?

Bones are a Living Tissue ! ! !

• Made of both hard and soft materials;• Spaces allow blood to circulate throughout

the bones

Skeletal System

• Classification:Long Bones (1)Short Bones (2)Irregular Bones (3)Flat Bones (4)

(1)

(2)

(3)

(4)

Types of Bone Tissue

Compact and Spongy

Marrow and Blood Cells

The Marrow is responsible for the production of blood cells!

Why do I need a Skeleton?

Bricks

Framework

House

Why do I need a Skeleton?

Muscles Skeleton (Framework)

Animal

The Axial Skeleton

• The part of the skeleton that forms the axis;

• Provides support and protection.

The Appendicular Skeleton

• Attached to the axial skeleton;

• Its main function is to allow movement.

The skeleton changes as the body develops and ages.

Infancy Childhood

The skeleton changes as the body develops and ages.

• In adolescence bones stop growing No more growth discs;

• In adulthood decrease of bone density (weaker bones!)

JOINTS Connect Parts of the Skeletal System

• Immovable and slightly movable joints;

JOINTS Connect Parts of the Skeletal System

• Freely movable joints

Types of Movement

ANGULAR ROTATIONAL

FOR NEXT CLASS...FOR NEXT CLASS...

• Review 1.2Review 1.2Exercises 1-5.Exercises 1-5.

• Dictionary (@ Dictionary (@ least 15 least 15 words!)words!)