FMA7394Respiratory
The composite organ of respiration in the left hemithorax (spanning 124 bronchial and vascular pieces in the atlas) where oxygen and carbon dioxide exchange between air and blood.
Conducts air through two lobar bronchial trees for pulmonary gas exchange.
Left pleural cavity of the thorax, lateral to the heart and superior to the left hemidiaphragm.
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Breathing depends on pressure changes produced by respiratory muscles, principally the diaphragm and intercostal muscles.
The right ventricle pumps blood to the lungs for oxygenation, and pulmonary veins return oxygenated blood to the left atrium.
Cartilage rings and elastic ligaments keep the trachea and laryngeal airways open during pressure changes.