Learning Targets : identify cells as the basic unit of life

1. Learning Targets: • identify cells as the basic unit • of life • describe how cells form tissues, organs and body systems

2. What are the building blocks of life? CELLS

3. How many cells do you think your body has? • 100 trillion cells in the human body • over 200 different types of cells • skin, muscle, brain, blood, bone, ………

4. WHAT DO CELLS NEED TO GROW? • Foodfor high energy and good growing power • Cells need energy to grow, move, talk, think and play • Eat lots of • fresh fruit and vegetables • milk • whole grains, cereal, pasta • meat …protein • not too much junk food • Food is digested … it is broken down into molecules tiny enough for the blood to deliver it to the body’s cells • Water • Oxygen for survival … it helps turn food into energy • Where do cells get oxygen? • we breathe in air, it goes into the lungs, then enters the bloodstream • then the heart pumps moving the oxygen to the cells • The average person breathes about 2,500 gallons of air each day

5. Do all cells in your body live as long as you do? No • some cells only live for a short period of time but when they die new cells take there place … example skin cells … live a few days • Other cells, like brain cells, live as long as you do … once they are destroyed they are not replaced • Our body’s grow when more cells are produced than actually die

6. Cells tiny compartments of life that make up all living things • the building blocks of life • cells work together to help your body function well • cells come in different shape and sizes • each cell does a special job … they make up • your skin cells, muscles, bones, your brain, and are in your blood

7. Learning Targets: • describe how cells form tissues, organs and body systems • explain how body systems are interrelated • identify ways to keep your body systems healthy

8. Body Systems

9. tissues – groups of similar cells that do the same kind of work • organ – a structure that is made up of different types of tissues that do a particular job • systems – formed by a group of organs that perform a related task

10. Body Systems • a group of organs that work together to support an important body function ??????? EXAMPLES ?????? • examples: Nervous System Circulatory System Skeletal System Muscular System Digestive System Excretory System Respiratory System • they work together to keep you alive and safe • the systems of the body are organized by what they do, not where they are • example - mouth and small intestine - digestive system

11. interrelated – the systems work together and are dependent on one another to keep the body functioning properly

12. The Body Systems and Their Function • Skeletal System • Muscular System • Circulatory System • Digestive System • Excretory System • Respiratory System • Nervous System • Supports the body, protects organs & helps you move • Moves body parts and controls organs • Transports materials, (food, oxygen, hormones), to cells and removes waste from cells …. Carried in blood • Breaks down food into substances that your cells can use. • Removes waste and controls the body’s water levels • Supplies blood with oxygen and removes carbon dioxide • Sends and receives messages to control all body systems

13. Ways To Keep Your Body Systems Healthy • Eat a balanced diet • drink plenty of water • exercise … be active • stay away from drugs and alcohol • don’t smoke … stay away from second hand smoke • manage your stress • exercise safely … warm-up, stretch, cool down • get enough rest • Follow common sense safety rules • wear protective equipment when required • wear a helmet • wear seat belts