1. Construct models to understand the anatomy of the human arm and spinal column. Explore the form and function of joints Identify major joints of the body and describe the movements they make Explore how opposing muscles allow humans to move Study the picture on p 161. What purpose do joints serve? Lesson 19 Joints and Movement

2. Getting started: Within your groups create a list of the things you know about joints and their movements (go over charts as a class.)jointsmovements Inquiry 19.1 p. 161 With a partner use the materials to assemble a model that works like the ones pictured on student sheet 19.1 Share both models with the group Answer the questions in step 6

3. Review the types of joints using the transparencies 19.1a- 19.1d. Explain the types of movements they allow. Questions p 162 A.What were the joints found in your models? C.How is your model similar to the chicken wing? D.What are examples of muscles that work in opposing pairs? (go over examples) Read What Kind of Joint Is This? p 165 SG Describe what is happening inside of the bone.

4. Fibrous, cartilaginous, synovial joints Plane, ball-and-socket, hinge, pivot, saddle joints Flexors, extensors Extensions 2- research artificial joints Extension 4- design and construct a working model of a joint Preparation for Lesson 20 p 226 TM