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Chest Wall Anatomy

Chest Wall Anatomy. A. Azami, Ph.D. Surface Landmarks. Boundaries of the thorax. Superior: jugular notch, sternoclavicular joint, superior border of clavicle, acromion , spinous processes of C7 Inferior: xiphoid process, costal arch, 12th and 11th ribs, vertebra T12. Thoracic wall.

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Chest Wall Anatomy

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  1. Chest Wall Anatomy A. Azami, Ph.D.

  2. Surface Landmarks

  3. Boundaries of the thorax • Superior: jugular notch, sternoclavicular joint, superior border of clavicle, acromion, spinous processes of C7 • Inferior: xiphoid process, costal arch, 12th and 11th ribs, vertebra T12

  4. Thoracic wall • Skin • Superficial fascia • Fat tissue • Cutaneous nerves • Superficial vessels Breast • Deep fascia • Muscles

  5. The segmental innervation of anterior surface of trunk

  6. Thoracic wall • Skin • Superficial fascia • Fat tissue • Cutaneous nerves • Superficial vessels • Breast • Deep fascia • Muscles

  7. Thoracic wall • Skin • Superficial fascia • Fat tissue • Cutaneous nerves • Superficial vessels • Breast • Deep fascia • Muscles

  8. Thoracic wall • Skin • Superficial fascia • Fat tissue • Cutaneous nerves • Superficial vessels • Breast • Deep fascia • Muscles

  9. Back muscles

  10. Ant. Thoracic muscles Serratus anterior

  11. Thorax Muscles • Intercostalesexterni • Intercostalesinterni

  12. Intercostalesexterni • Origin: lower border of rib • Insertion: upper border of rib below origin • Action: elevate ribs adding in forced inspiration Intercostalesinterni • Origin: upper border of rib • Insertion: lower border of rib above origin • Action: depress ribs for forced expiration

  13. Diaphragm Shape and position: dome-shaped between thorax and abdomen Origin • Sternal part: xiphoid process • Costal part: lower six and costal cartilages • Lumbar part: arises from upper 2-3 lumbar vertebrae Insertion • central tendon

  14. Diaphragm

  15. Inspiration • movements of: • Diaphragm • Sternum • Ribs

  16. sternum Ribs

  17. Intercostal space

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