Muscles and Body Movements

1. Muscles and Body Movements • Origin– • Insertion – Figure 6.12

3. Types of Ordinary Body Movements • Flexion- • Extension – • Hyperextension – • Rotation – • Abduction – • Adduction – • Circumduction –

5. Special Movements • Dorsiflexion – • Plantar flexion – • Inversion – • Eversion – • Supinate – • Pronate – • Opposition –

6. Body Movements Figure 6.13a–c

7. Body Movements Figure 6.13d

8. Types of Muscles “Jobs” • Prime mover – • Antagonist – • Synergist – • Fixator –

9. Naming of Skeletal Muscles 1. Direction of muscle fibers 2. Relative size of the muscle 3. Many muscles are named for bones 4. Number of origins 5. Location of the muscle’s origin and insertion 6. Shape of the muscle 7. Action of the muscle

10. 5 Golden Rules of Skeletal Muscle 1). All muscles cross at least one joint 2). The bulk of the muscle lies proximal to the joint 3). Two attachments: origin and insertion 4). Muscles pull 5). The insertion moves toward the origin

11. Head and Neck Muscles Figure 6.15

12. Trunk Muscles Figure 6.16

13. Deep Trunk and Arm Muscles Figure 6.17

14. Muscles of the Pelvis, Hip, and Thigh Figure 6.19c

15. Muscles of the Lower Leg Figure 6.20

16. Superficial Muscles: Anterior Figure 6.21

17. Superficial Muscles: Posterior Figure 6.22