1. Cells, Tissues, Organs and Body Systems Pages 384-385 Tissues Organs Body Sys.

2. Cells How does a single cell become a person made of many cells? cell The basic unit of life There are many different kinds of cells. Each cell has its own function or job.

3. Types of Cells Even though cells perform different jobs or functions in the body, they all have the same structure. Muscle Cells Red Blood Cells Nerve Cells

4. Cells Continued…. Bone Cells: calcify to become bones. Muscle Cells: form muscles Nerve Cells: send messages Red Blood Cells: carry oxygen White Blood Cells: kill germs Remember these are just a few examples!!

5. The Skeletal System The skeletal system protects your internal organs and helps you move. skeletal system The framework of bones and other tissues that supports the body The 206 bones in your body make blood cells and store calcium and other minerals.

6. The Skeletal System Some joints allow bones to move, while others never move but protect organs instead. joints The places where two or more bones meet

7. The Skeletal System Three types of connecting tissue are tendons, ligaments, and cartilage. tendons A type of connecting tissue that joins muscles to bones and muscles to muscles ligaments A type of connecting tissue that holds bones to other bones at the joint cartilage A strong, flexible tissue that allows joints to move easily, cushions bones, and supports soft tissues

8. Ligaments and Tendons

10. The Muscular System The three main types of muscles that make up the muscular system are skeletal, smooth, and cardiac. muscular system Tissues that move parts of the body and control the organs The muscular system provides the power and flexibility you need to move.

12. Caring for Your Bones and Muscles Tips for Caring for Your Bones and Muscles Do flexibility exercises. Choose physical activities that strengthen your muscles and bones. Choose physical activities that build cardiovascular strength. Practice proper posture. When you lift heavy objects, keep your back straight and bend your knees. Eat healthful foods to provide bones and muscles the nutrients they need.