VANA 101 Chapter Notes -Pulmonary Artery, Pulmonary Vein, Arteriole
21 Jan 2022
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Document Summary
The transport system of the body develops in all organisms where simple diffusion is insufficient for nutrients and oxygen to reach the tissues, and for waste products and metabolites to be transported away from the tissues. The lumen diameter is smaller than wall thickness. Heart: four chambers, right atrium, right ventricle, left atrium, left ventricle. The lumen diameter is larger than wall thickness. Its apex covers the proximal end of the paraconal interventricular groove: the left auricle lies along the right auricle, caudal to it, for nearly its entire length, the two being separated by the pulmonary trunk. Left ventricle is conical in shape, with its apex forming the apex of the heart. Cranial and caudal vena cava > right atrium > right atrioventricular orifice (exit/opens) > right ventricle (enter) > pulmonary arteries > pulmonary valves (opens) > to the lungs = oxygenated blood. A close-fitting serous sac which covers the heart and the origins of the major blood vessels.
