Body Organization

Cells

• You already know a TON about cells!

• Is the basic unit of structure and function

• Complex organisms are composed of trillions of cells

• Each cell has a different function based on where it is in the body

Tissues

• Tissues- a group of similar cells that perform the same function

Types of Tissue

Muscle tissue

-allows your body to move by shortening and stretching out

Nervous TissueNervous tissue – carries electrical messages back and forth between the

brain and other parts of the body

Connective Tissues-connects and supports parts of your body

-Bones and fat are connective tissue

Epithelial Tissue

– covers surface of body and internal organs

– protects whatever is underneath

Organs

• A structure composed of different kinds of tissue

• All organs will perform a specific job

• (each type of tissue in the organ will help carry out that specific job)

Organ Systems

• Each organ is part of an organ system

• Organ system- a group of organs that work together to perform a major function

Circulatory System

• Transports materials to and from cell throughout your body

Digestive System

• Breaks down food and absorbs nutrients

Nervous System

• Detects information from the environment and controls body functions

Skeletal System

• Supports and Protects the body

Endocrine System

• Controls many body process by using chemical reactions

Muscular System

• Enables movement of the body and internal organs

Respiratory System

• Takes in oxygen and eliminates carbon dioxide

Excretory System

• Removes wastes from your body.