Henry Gray (18251861). Anatomy of the Human Body. 1918.
diameter, arising from the conus arteriosus of the right ventricle. It extends obliquely upward and backward, passing at first in front and then to the left
FIG. 503 Transverse section of thorax, showing relations of pulmonary artery. (See enlarged image)
FIG. 504 Pulmonary vessels, seen in a dorsal view of the heart and lungs. The lungs have been pulled away from the median line, and a part of the right lung has been cut away to display the air-ducts and bloodvessels. (See enlarged image)