|A.||Pectoral fascia, transversus thoracis muscle, right lung|
Intercostal muscles, internal thoracic artery, right heart
Serratus anterior muscle, pleura, inferior vena cava
External oblique muscle, superior epigastric artery, azygos vein
Answer A) Pectoral fascia, transversus thoracis muscle, right lung
Pectoral fascia, transversus thoracis muscle, right lung
The pectoralis major, sheathed in its fascia, spans the anterior chest wall, originating from the medial clavicle, anterior sternum, and six upper costal cartilages, and inserting into the proximal humerus.
The transversus thoracis muscles lie on the internal surface of the thoracic cage, originating from the sternum and spanning out laterally to the 2nd to 6th ribs.
The pectoralis fascia, transversus thoracis, and right lung would be intersected by a line originating at a point 2 cm medial to the midclavicular line.