Download - Thoracic walls (Anatomy of the Thorax)
THORACIC WALLS
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Skeleton of Thoracic Cage
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Muscles of the Thoracic
Wall(Page 27 )
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B- Muscles on inner aspect of thoracic wall
Sternocostalis & Subcostalis
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Intercostal Nerves(Page 40)
• They are 11 nerves.• Classified into:
1- Typical intercostal nerves: 3rd – 6th nerve.2- Atypical intercostal nerves: 1st & lower 5 nerves.
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Course of Typical Intercostal Nerves
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Branches of Typical Intercostal
Nerves
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Anterior cutaneous br. Dr.Sherif Fahmy
Thoraco-abdominal nerves (T7-T11)
Subcostal n.
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Collateral br.
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Blood Supply of
Thoracic Wall(Page 31)
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Intercostal Arteries
1- Posterior intercostal arteries (11 pairs).2- Anterior intercostal arteries (9 pairs).
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Posterior Intercostal
Arteries
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Origin of Posterior Intercostal
Arteries
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Subclavian artery Costo-cervical trunk
Descending thoracic aorta
3rd – 11th post. Intercostal arteries
Subcostal artery
1st & 2nd post. Intercostal arteries
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Course of Posterior
Intercostal arteries
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Branches of Posterior Intercostal
Arteries
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Collateral br.
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Internal Thoracic Artery
(Page 33)
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Veins of Chest Wall
Internal Thoracic, Azygos &
HemiazygosDr.Sherif Fahmy
Vena Azygos(Page 37)
& Hemiazygos
Veins(Page 39)
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Thoracic Outlet
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Diaphragm
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Thoracic Inlet
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