chest wall anatomy
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
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Chest Wall Anatomy
A. Azami, Ph.D.
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Surface Landmarks
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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
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Thoracic wall• Skin • Superficial fascia
– Fat tissue– Cutaneous nerves– Superficial vessels
Breast• Deep fascia• Muscles
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The segmental innervation of anterior surface of trunk
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Thoracic wall• Skin • Superficial fascia
– Fat tissue– Cutaneous nerves– Superficial vessels
• Breast• Deep fascia• Muscles
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Thoracic wall• Skin • Superficial fascia
– Fat tissue– Cutaneous nerves– Superficial vessels
• Breast• Deep fascia• Muscles
![Page 19: Chest Wall Anatomy](https://reader033.vdocuments.mx/reader033/viewer/2022061606/5681636e550346895dd44a98/html5/thumbnails/19.jpg)
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Thoracic wall• Skin • Superficial fascia
– Fat tissue– Cutaneous nerves– Superficial vessels
• Breast• Deep fascia• Muscles
![Page 26: Chest Wall Anatomy](https://reader033.vdocuments.mx/reader033/viewer/2022061606/5681636e550346895dd44a98/html5/thumbnails/26.jpg)
Back muscles
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Serratus anterior
Ant. Thoracic muscles
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Thorax Muscles• Intercostales externi• Intercostales interni
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Intercostales externi• Origin: lower border of rib• Insertion: upper border of
rib below origin• Action: elevate ribs adding
in forced inspiration
Intercostales interni• Origin: upper border of rib• Insertion: lower border of rib
above origin• Action: depress ribs for
forced expiration
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DiaphragmShape 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 vertebraeInsertion• central tendon
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Diaphragm
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Inspirationmovements of:
• Diaphragm• Sternum• Ribs
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sternum
Ribs
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Intercostal space