Access Prior Knowledge Lesson 3: How do organs work together? Opening Activity Open Science textbook to page 46. Open Science workbook to page 15A to review home learning. Open Science folder to review vocabulary words and outline for the chapter. Open Science journal and answer the following questions: 1-How do you know your skin is an organ? Review Content Cards and Q-Cards in bin, sharing with partners quizzing each other quietly. Log in to clickers using student ID number. Be ready to review home learning when timer goes off. Don't forget to write your home learning in your agenda page 16A. Do you agree with the statement? 1 Yes No An organ system is made up of organs and tissues that perform a special job. Do you agree with the statement? 2 Yes No You can control the movements of about 640 muscles in your body. Do you agree with the statement? 3 Yes No Your skeletal system is not considered an organ system. Do you agree with the statement? 4 Yes No All your body’s muscles are connected to bones. Organ Systems An organ system is a group of organs and tissues that work together to carry out a life process. Organ Systems First paragraph pg. 46 Bones Form a System Each bone is an organ and it provides support and protects your internal organs. There are about 200 bones in your body that give you support and protection. Second paragraph pg. 46 Muscles Work as a System Muscles are organs that work together to move your body. There are about 640 muscles that you control. Third paragraph pg. 46 Organ Systems Work Together The muscle and skeletal system work together to move your body. Muscles pull the bones to make movement in your body. Muscles Second paragraph pg. 48 Other Systems Work Togther Many organ systems work together in many ways to make a complex organism. For example, your nervous system controls how your muscles move your bones. Nerves carry electrical signals from your brain and spinal cord to your muscles. Without nerves you would never move a muscle. First paragraph pg. 49 MatchQuest Organs Organism Tissues Organ System Cells TextQuest Answer questions in your Science Journal 1. What is an organ system? 2. How many bones do we have in our body? 3. Which two organ systems work together to move the body? Don't forget to write your home learning in your agenda page 16A.