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? Re view 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.

1An organ system is made up of organs and tissues that perform a special job. Yes No Do you agree with the statement?

2You can control the movements of about 640 muscles in your body. Yes No Do you agree with the statement?

3Your skeletal system is not considered an organ system. Yes No Do you agree with the statement?

4All your body’s muscles are connected to bones. Yes No Do you agree with the statement?

Organ Systems An organ system is a group of organs and tissues that work together to carry out a life process. First paragraph pg. 46 Organ Systems

Bones Form a System Muscles Work as 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. Muscles are organs that work together to move your body. There are about 640 muscles that you control. Second paragraph pg. 46 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. 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. Other Systems Work Togther Muscles Second paragraph pg. 48 First paragraph pg. 49

MatchQuest Organs OrganismTissues 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.