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Articulations & Body Movements

Articulations & Body Movements

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Articulations & Body Movements

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  1. Exercise 13 Articulations & Body Movements

  2. 3 Types of Body Joints • Fibrous Joints • Cartilaginous Joints • Synovial Joints

  3. Fibrous Joints • Bones joined by fibrous tissue • Immovable • Skull sutures Table 9-2

  4. Cartilaginous Joints • Bones joined by cartilage • Rigid or slightly moveable • Rib + costal cartilage + sternum, vertebrae + discs, pubic symphysis + coxal bones Table 9-2

  5. Synovial Joints • Bones separated by a joint CAVITY • 2-layered joint capsule • Contains synovial fluid • Freely moveable • Most of the joints you usually think of Table 9-2

  6. Types of Synovial Joints • Hinge • Pivot Fig. 9-6

  7. Types of Synovial Joints • Condyloid • Ball and Socket Fig. 9-6

  8. 3 Joints in One: KNEE • Largest, most complex of body • Extension, flexion, rotation Fig. 9-12

  9. Meniscus: semilunar cartilage Fig. 9-12

  10. Ligaments Inside Joint Capsule: ACL, PCL Fig. 9-12

  11. Ligaments Outside Joint Capsule Fig. 9-12

  12. Ligaments Outside Joint Capsule Fig. 9-12

  13. Movements of Synovial Joints • Flexion: reduce distance b/w 2 bones • Extension: increase • Abduction: move limb away from midline • Adduction: toward midline Fig. 9-3

  14. Movements of Synovial Joints • Pronation: palm up, turns down (radius & ulna crossed) • Supination: palm down, turns UP (bones parallel) Fig. 9-4

  15. Movements of Synovial Joints • Dorsiflexion: ankle moves dorsally (stand on heel) • Plantar flexion: ankle moves & flexes foot (stand on toes) Fig. 9-5