2. Click on the arrow to learn more! Our Body Systems!

3. Circulatory System The circulatory system uses your heart and blood vessels to carry oxygen and nutrients to parts of your body. The circulatory system uses your heart and blood vessels to carry oxygen and nutrients to parts of your body.

4. The Heart –part of the circulatory system! The heart’s job is to pump the blood throughout the body. The heart’s job is to pump the blood throughout the body. It is the strongest muscle in your body. It is the strongest muscle in your body. It is about the size of your fist. It is about the size of your fist. Your heart pumps all the time and moves your blood to clean and feed your cells. Your heart pumps all the time and moves your blood to clean and feed your cells. Look at this real heart beat! Listen to this human heart beat by clicking on the picture!

5. Blood Vessels – part of the circulatory system! Blood vessels that carry oxygen away from the heart to the body cells are called arteries. (RED) Blood vessels that carry oxygen away from the heart to the body cells are called arteries. (RED) Blood vessels that carry carbon dioxide in blood to the heart are called veins. (BLUE) Blood vessels that carry carbon dioxide in blood to the heart are called veins. (BLUE) Blood vessels that that let the fresh supplies leave the blood and enter the body are called capillaries. They connect the veins and arteries. Blood vessels that that let the fresh supplies leave the blood and enter the body are called capillaries. They connect the veins and arteries.

6. Quiz Time! What do arteries carry away from the heart? Select the correct answer to move on to the next system! What do arteries carry away from the heart? Select the correct answer to move on to the next system! * A) carbon dioxide * A) carbon dioxide * B) calcium * B) calcium * C) oxygen * C) oxygen

7. Incorrect! The veins carry carbon dioxide to the heart! Click on the back arrow to try again! The veins carry carbon dioxide to the heart! Click on the back arrow to try again!  TRY AGAIN

8. Incorrect! Calcium is not carried away from the heart through the arteries! Calcium is not carried away from the heart through the arteries!  TRY AGAIN

9. You are correct! The arteries do carry oxygen away from the heart! Click on the arrow to go to the next body system! The arteries do carry oxygen away from the heart! Click on the arrow to go to the next body system!

10. Skeletal System A skeleton is the framework for your body and is made of hard bones. A skeleton is the framework for your body and is made of hard bones. There are 206 bones in your human body. There are 206 bones in your human body. Bones give your body its shape and protect your organs. Bones give your body its shape and protect your organs. Click on the picture to learn more!

11. Quiz Time! Where are most of your 206 bones located? Click on the correct answer to move onto the next body system! Where are most of your 206 bones located? Click on the correct answer to move onto the next body system! –* A) in your legs * A) in your legs* A) in your legs –* B) in your hands and feet * B) in your hands and feet* B) in your hands and feet –* C) in your skull * C) in your skull* C) in your skull

12. Incorrect! No, the majority of your bones are not in your legs! Click on the back button to try again! No, the majority of your bones are not in your legs! Click on the back button to try again!

13. Incorrect! Sorry, the majority of your human bones are not located in your skull! Sorry, the majority of your human bones are not located in your skull!  TRY AGAIN!

14. You are Correct! Yes! We have many bones in our hands and feet! You may go onto the next body system by clicking on the arrow below. Yes! We have many bones in our hands and feet! You may go onto the next body system by clicking on the arrow below.

15. Muscular System Muscles are made of many stretchy, elastic cells and fibers that help make your body move. Muscles are made of many stretchy, elastic cells and fibers that help make your body move. There are more than 600 muscles in your body! There are more than 600 muscles in your body! Muscles work in pairs. While one muscle is working the other muscle is relaxing. Muscles work in pairs. While one muscle is working the other muscle is relaxing. Muscles help keep your organs in place. Muscles help keep your organs in place.

16. Do you think you should work out with weights? Click on what you think you should do. Click on what you think you should do.  Yes, using heavy weights is healthy for my muscles and my body. Yes, using heavy weights is healthy for my muscles and my body. Yes, using heavy weights is healthy for my muscles and my body.  No, my muscles are not fully developed yet, and I should wait until I am the right age to use heavy weights. No, my muscles are not fully developed yet, and I should wait until I am the right age to use heavy weights. No, my muscles are not fully developed yet, and I should wait until I am the right age to use heavy weights.

17. Not Exactly As a third grader, you need to be careful to not lift heavy weights that could be damaging to your body. As a third grader, you need to be careful to not lift heavy weights that could be damaging to your body. Click on the picture to learn more!

18. You are right! As a third grader, you need to be careful to not lift heavy weights that could be damaging to your body. As a third grader, you need to be careful to not lift heavy weights that could be damaging to your body. Click on the picture to learn more!

19. Nervous System Your brain is the boss of your body! It runs the show and controls just about everything you do! Your brain is the boss of your body! It runs the show and controls just about everything you do! The brain is most important part of the nervous system. The parts of the nervous system include the cerebrum, cerebellum, brainstem, pituitary gland and hypothalamus. The brain is most important part of the nervous system. The parts of the nervous system include the cerebrum, cerebellum, brainstem, pituitary gland and hypothalamus. Your brain can’t do it alone! It needs nerves and the spinal cord. The spinal cord and nerves let messages flow back and forth between the brain and body. Your brain can’t do it alone! It needs nerves and the spinal cord. The spinal cord and nerves let messages flow back and forth between the brain and body. Click on the picture to learn more!

20. Quiz Time! Why is the nervous system called the “nervous system”? Click on the right answer to go to the next body system! Why is the nervous system called the “nervous system”? Click on the right answer to go to the next body system! –* A) because it is nervous * A) because it is nervous* A) because it is nervous –* B) because it is shaky like you would be when your nervous * B) because it is shaky like you would be when your nervous* B) because it is shaky like you would be when your nervous –* C) because it involves nerves that are located throughout your body. * C) because it involves nerves that are located throughout your body.* C) because it involves nerves that are located throughout your body.

21. Incorrect! Our nervous system is not considered to be nervous! Click on the back button and try again! Our nervous system is not considered to be nervous! Click on the back button and try again!

22. Incorrect! Our nervous system is not considered to be nervous and shaky like if we were nervous! Click on the back button and try again! Our nervous system is not considered to be nervous and shaky like if we were nervous! Click on the back button and try again!

23. You are Correct! Everything you do depends on your nerves involved in your nervous system. Your brain sends messages to your nerves to have you do something. Everything you do depends on your nerves involved in your nervous system. Your brain sends messages to your nerves to have you do something.

24. Digestive System Digestion allows your body to get nutrients and energy in needs from the food you eat. Digestion allows your body to get nutrients and energy in needs from the food you eat. The digestive process begins in your mouth while food travels through your body. Your tongue plays a big part in the beginning of the digestive process. The digestive process begins in your mouth while food travels through your body. Your tongue plays a big part in the beginning of the digestive process. Click on the picture to see a digestive system diagram!

25. Quiz Time! Where does the digestive system process begin? Click on the correct answer to go to the next body system! Where does the digestive system process begin? Click on the correct answer to go to the next body system! A) The mouth A) The mouth A) The mouth A) The mouth B) The stomach B) The stomach B) The stomach B) The stomach C) The diaphragm C) The diaphragm C) The diaphragm C) The diaphragm

26. You are Correct! We begin the digestive process when we put the food into our mouths! Click on the arrow to go to the next body system! We begin the digestive process when we put the food into our mouths! Click on the arrow to go to the next body system!

27. Incorrect! The stomach is part of the digestive system, but it is not where it all begins! Click on the back button to try again! The stomach is part of the digestive system, but it is not where it all begins! Click on the back button to try again!

28. Incorrect! The diaphragm is located near the stomach but is not the first step in the digestive system! Click on the back arrow to try again! The diaphragm is located near the stomach but is not the first step in the digestive system! Click on the back arrow to try again!

29. Respiratory System There are two large lungs in your chest. One is a bit bigger than the other. The extra space leaves room for your heart. There are two large lungs in your chest. One is a bit bigger than the other. The extra space leaves room for your heart. The diaphragm works with your lungs to allow you to inhale and exhale. Inhale is to breathe in and exhale is to breathe out. The diaphragm works with your lungs to allow you to inhale and exhale. Inhale is to breathe in and exhale is to breathe out. Click here to hear these lungs breathe after an hour of exercise Click here to learn more!

30. Quiz Time! What do you blow out when you exhale? What do you blow out when you exhale? *A) Oxygen *A) Oxygen *B) Carbon Dioxide *B) Carbon Dioxide *C) Saliva *C) Saliva

31. Incorrect! You actually inhale oxygen! Click on the back arrow to try again! You actually inhale oxygen! Click on the back arrow to try again!

32. Incorrect! Your lungs do not exhale saliva! Spit may be in your mouth and may come out, but this is not what exhaling entails. Click on the back button to try again! Your lungs do not exhale saliva! Spit may be in your mouth and may come out, but this is not what exhaling entails. Click on the back button to try again!

33. Yes! You are right! We exhale Carbon Dioxide. Our bodies do not want carbon dioxide inside of us, so we blow it out! Congratulations you have finished this program! You are now considered to be a “Body Systems Expert”! We exhale Carbon Dioxide. Our bodies do not want carbon dioxide inside of us, so we blow it out! Congratulations you have finished this program! You are now considered to be a “Body Systems Expert”!