sulcus venae cavae superioris – an impression of the superior vena cava on the upper anterior part of the mediastinal surface.

lingula pulmonis sinistri – a 'tongue' of the left lung.

margo inferior – a lower margin of a lung, transition of facies costalis to facies diaphragmatica.

margo anterior – an anterior margin of a lung, transition of facies costalis in facies mediastinalis.

apex pulmonis – the peak of a lung, located in the cupula pleurae.

ligamentum pulmonale – a caudal narrowed continuation of the hilum area in which the pleura visceralis passes into the pleura parietalis, as well as on the pulmonary hilum.

hilum pulmonis – the pulmonary hilum, the medial aspect of each lung on which the bronchi and arteries enter the lungs, the pulmonary veins exit.

facies mediastinalis – an area facing the mediastinum.

facies diaphragmatica – a lower area facing the diaphragm.

facies costalis – an area facing the ribs.

alveolus), which are well entwined with blood capillaries. Mammalian, human and also bee lungs are comprised by millions of thin-walled sacs, pulmonary alveoli (sing. The lungs are located in the pleural cavity having their surface covered by a delicate membrane, pulmonary pleurae (sing. pulmōnēs) are a pair organ, that secures the function of exchanging gasses between the air and the blood.

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