Thorax Flashcards
Structure Relations: Intercostal Nerves, Arteries and Veins
Positioned Deep to Internal Intercostal Muscles
& Directly Inferiorly to the Ribs
Structure Relation: Internal Thoracic Artery
Positioned Posterior/Deep to the first 6 costal cartilages (running vertically)
Structure Relation: Left Phrenic Nerve
Passes Anterior to Root of the Left Lung & Laterally to the Ascending Aorta
Positioned Lateral to the Pericardial Sac
Structure Relation: Right Phrenic Nerve
Positioned Lateral to the Superior Vena Cava and Pericardial Sac
& Passes Anterior to the Root of the Right Lung
Structure Relation: Azygos Vein (Arch)
Passes Superior to the Right Main Bronchus
Structure Relation: Thoracic Aorta
Positioned Posterior to the Pericardial Sac and Left/Lateral to the Vertebral Bodies
& Passes Posterior to the Left Main Bronchus
Structure Relation: Superior Vena Ceva
Positioned Lateral/Right to the Ascending Aorta
Structure Relation: Inferior Vena Cava
Positioned to the Right of the Descending Aorta
Structure Relation: Arch of the Aorta
Passes Superior to the Pulmonary Trunk
Structure Relation: Left Vagus Nerve
Passes Lateral to the Arch of the Aorta &
Posterior to the Left Main Bronchus
Structure Relation: Left Recurrent Laryngeal Nerve
Passes Posterior to the Ligamentum Arteriosum &
Inferior to the Arch of the Aorta
Structure Relation: Right Vagus Nerve
Positioned Lateral to the Trachea &
Passes Medial to the Arch of the Azygos Vein & Posterior to the Right Main Bronchus
Structure Relation: At the Hilum of the Left Lung, the Pulmonary Artery is….
Positioned Superior to the Main Bronchus
Structure Relation: At the Hilum of the Left Lung, the Pulmonary Veins are…
Positioned Anterior and Inferior to the Main Bronchus
Structure Relation: At the Hilum of the Right Lung, the Pulmonary Artery is…
Positioned Anterior to the Main Bronchus
Structure Relation: At the Hilum of the Right Lung, the Pulmonary Veins are…
Positioned Anterior to the Main Bronchus &
Anterior and Inferior to the Pulmonary Arteries
Structure Relation: Esophagus
Positioned Posterior to the Trachea and Pericardial Sac &
Passes Posterior to the Left Main Bronchus
Structure Relation: Thoracic Duct
Positioned Directly Anterior to the Thoracic Vertebral Bodies
Structure Relation: Right Posterior Intercostal Arteries
Pass Anterior to the Vertebral Bodies
Structure Relation: Sympathetic Chain
Positioned Lateral to the Thoracic Vertebral Bodies
Structure Relation: Greater Splanchnic Nerve
Positioned Anterior-Medial to the Sympathetic Chain
Bony Landmarks: External Intercostal
Rib to Rib oriented from Superior-Lateral to Inferior-Medial
(Down and In)
Bony Landmarks: Internal & Innermost Intercostal
Rib to Rib oriented Superior-Medial to Inferior-Lateral
(Down and Out)
Bony Landmarks: Transversus Thoracis
Posterior Sternum to Costal Cartilages
Bony Landmarks: Diaphragm
Xiphoid Process, Inner Surface of the Lower Ribs & Costal Cartilages, Lumbar Vertebrae via Curran to the Central Tendon
Action: External Intercostal
Elevation of Ribs
Action: Internal & Innermost Intercostal
Depression of Ribs
Action: Transversus Thoracis
Depress Ribs