·        3 right lobes; 2 left lobes + lingula; 10 bronchopulm segments bilat w/i lobes

·        lobule – smallest gross anatomic compartment of lung (3-5 terminal bronchioles, 30 pulm acini)

·        bronchial arteries arise from intercostals and aorta; bronchial veins return to azygos and intercostals veins

·        superficial lymphatics along pleural surface; deep (intrapulm) lymph adj to bronchovasc bundle and along interlob septa; connected