Anatomy Of The Lung Pipeline System In The Yak: A Corrosion Cast Study

The anatomy of the lung pipeline system, including the segment bronchi, the pulmonary artery, the pulmonary vein and the bronchial artery, is investigated using injecting and casting corrosion techniques in 38 adult yaks. This paper reports the ramification and denomination, the distributing feautures and the interrelationship of the segment bronchi, the pulmonary artery, the pulmonary vein and the bronchial artery on yak lung. The result is: the lung of yak are composed of the apical lobe and the diaphragmatic lobe of left lung, the apical lobe, the middle lobe, the diaphragmatic lobe and accessory lobe of the right lung. The segment bronchi of left lung includes: cranial segment bronchus and caudal segment bronchus of apical lobe, cranial dorsal segment bronchus, middle dorsal segment bronchus, caudal dorsal segment bronchus, ventral basal segment bronchus, lateral basal segment bronchus of diaphragmatic lobe. The segment bronchi of right lung includes: cranial segment bronchus and caudal segment bronchus of apical lobe, dorsal segment bronchus and ventral segment bronchus of middle lobe, cranial dorsal segment bronchus, middle dorsal segment bronchus, caudal dorsal segment, ventral basal segment bronchus, lateral basal segment bronchus, dorsal basal segment bronchus and medial basal segment bronchus of diaphragmatic lobe, dorsal segment bronchus and ventral segment bronchus of accessory lobe. The intrapulmonary ramification and distribution range of the...