2. Major Body System 3 rd grade Everything your body can do.

3. The Skeletal System Has three major jobs: 1. It protects our vital organs such as the brain, the heart, and the lungs. 2. It gives us the shape that we have. 3. It allows us to move. Because muscles are attached to bones, when muscles move, they move the bones and the body moves.

4. The Digestive System Is made up of the mouth, esophagus, stomach, small intestine, and large intestine. The purpose of the digestive system is to break down food so that nutrients are absorbed by the body and to remove waste products from the body. Video

5. What is the cardiovascular system? The organs and tissues involved in circulating blood through the body. What is the cardiovascular purpose? To carry blood, oxygen and nutrients to all of the body. The Cardiovascular System

6. The Muscular System: Moves the body. Muscles move by contracting, or becoming shorter. Muscles attached to the bones move the arms, legs, fingers, and other parts of the skeleton. Another type of muscle is found in most of the organs inside the body. This type of muscle works automatically to make the organs, such as the stomach, work. The heart is made of a special type of muscle. When heart muscles relax, blood from the body enters the heart. The muscles quickly tighten up to squeeze the blood back out again. This action is called a heartbeat. The heart beats about 70 times each minute. The body has more than __?__ muscles. 400 500 600

7. Correct!!!!!

8. Incorrect, Try Again!!

9. The Respiratory System Is the system of the body that deals with breathing. When we breathe, the body takes in the oxygen that it needs and removes the carbon dioxide that it doesn't need. The organ most closely connected with this system is the lung. The human body has two lungs.

10. The Nervous System The nervous system is made up of your brain, spinal chord, and all of the nerves throughout your body. It monitors conditions inside and outside of your body sending signals to respond to them. What is the nervous system? What are nerves? They are thin threads of nerve cells that run throughout your body they carry messages back and forth kind of like telephone wires do

11. Review the System with the function: Skeletal Cardiovascular Muscular Digestive Respiratory Nervous

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13. Core Standard http://www.worldbookonline.com/kids/article?id=ar830046&st=body http://kidshealth.org/kid/htbw/bones.html http://library.thinkquest.org/06aug/01768/Skeletal.html http://yucky.discovery.com/flash/body/pg000136.html References Standard 3: The students will understand and respect self and others related to human development and relationships. Objective 1: Summarize the functions of the skeletal and muscular systems. a)Name the major body systems and their basic functions. b)Describe the skeletal and muscular systems. c)Demonstrate ways to strengthen the skeletal and muscular systems.