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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.