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Thyroid gland

Omohyoid, sternothyroid, and sternohyoid musclcs

Manubrium ot sternum Sternodeidomastoid musde External jugular vcin Costal part ot' parietal pleura (cuf away)

Clavicle

Pectoralis major musde

Trachea and interior thyroid veins Common carotid artery Interna! jugular vein Phrenic nerve

Anterior scalene musde Thoradc duet

Brachial plexus

Subdavian artery and vein

Pectoralis minor musde

Internal thoradc artery and vein

Intercostal

muscles

Axillary artery and vein

Cardiac notch ot left lung

Superior lobe, Middle lobe, Interior lobe ot right lung

Oblique fissure

Horizontal fissure ot right lung

Costodiaphragmatic recess

Diaphragmatic part ot parietal pleura

Diaphragm

7th costal cartilage

Xiphoid procesś

Pleural reflections

Superior lobe, Interior lobe ot left lung

Costomediastinal

space

Obligue fissure

Musculophrenic artery Lingula ot' superior lobe ot left lung Internal thoradc artery Mediastinal part ot parietal pleura Fibrous pericardium