|Description:||In the calf, the pulmonary artery and vein are found at opposite sides
of the conducting air passage, in this case an intrapulmonary bronchus.
Notice that all three structures share the same connective tissue
adventitia. The artery gives off smaller branches. The vein receives
smaller tributeries. The three structures together form a "three ring
circus". This arrangement is different from that found in other species
where the pulmonary artery and airway run together ("binocular") while
the pulmonary vein travels by itself at this level. PK1606. K4a.
H&E. Original mag. 16 x. Pulmonary artery. Pulmonary vein.
Intrpulmonary bronchus. Lung. Respiratory System. Calf. Bovine.|