MEDICAL BIOLOGY, HUMAN ANATOMY, PHYSIOLOGY AND PATHOLOGY - Ya.I. Fedoniuk 2010

ANATOMY, PHYSIOLOGY, PATHOLOGY

CHAPTER 5. THE PROCESS OF BLOOD AND LYMPH CIRCULATION. ITS PATHOLOGY

VESSELS OF THE PULMONARY CIRCULATION

The pulmonary trunk (truncus pulmonalis) carries venous Blood from The Heart to the Lungs. It originates from the right ventricle of The Heart and, at the level of the IV-V thoracic vertebrae, divides into the right and left pulmonary Arteries (a. pulmonalis dextra, a. pulmonalis sinistra), which HEAD towards the hilum of the lungs. Within the lungs, the pulmonary arteries branch down into capillaries that entwine the alveoli. This is where gas exchange takes place. The capillary network converges to form tributaries of the Pulmonary Veins (vv. pulmonales), which carry arterial blood to the left atrium. Two pulmonary veins emerge from each lung.



Last update: 08/08/2026

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