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lungs click to hear : lungs

Respiratory organs formed of extensible tissue, in which air from the nasal and oral cavities is carried, ensuring oxygenation of the blood.
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lower lobe main bronchus lobe bronchus trachea oblique fissure upper lobe terminal bronchiole pleural cavity parietal pleura visceral pleura

lower lobe click to hear : lower lobe

Section of the left lung separated from the upper lobe by the oblique fissure.

main bronchus click to hear : main bronchus

Channel leading from the trachea; it allows air to enter and exit the lung, and branches out inside the lung.

lobe bronchus click to hear : lobe bronchus

Branch of the main bronchus ending in a pulmonary lobe and dividing into smaller and smaller bronchi.

trachea click to hear : trachea

Muscular cartilaginous tract that is a continuation of the larynx; it divides into two main bronchi, each of which ends in a lung, and allows air to pass.

oblique fissure click to hear : oblique fissure

Deep ridge bounding the upper and lower lobes of the left lung and at the back of which the visceral pleura lies.

upper lobe click to hear : upper lobe

Section of the left lung separated from the lower lobe by the oblique fissure.

terminal bronchiole click to hear : terminal bronchiole

Final branch of the bronchus having no cartilage and ending in small air pockets (alveolae) where gases are exchanged with the blood.

pleural cavity click to hear : pleural cavity

Space between the two pleurae containing a lubricating fluid (pleural liquid); it facilitates their sliding and thus aids breathing.

parietal pleura click to hear : parietal pleura

Outer elastic layer of the pulmonary casing; it adheres to the thoracic wall and the diaphragm.

visceral pleura click to hear : visceral pleura

Inner elastic layer of the pulmonary casing covering the lung and fissures; its elasticity allows the lung to change size.