WebJul 6, 2024 · The superior vena cava is located in the upper chest region and is formed by the joining of the brachiocephalic veins. These veins drain blood from the upper body regions including the head, neck, and chest. It is bordered by heart structures such as the aorta and pulmonary artery. The inferior vena cava is formed by the joining of the … WebPulmonary veins are blood vessels that carry oxygen-rich blood from your lungs to your heart. Your pulmonary veins are part of your body’s pulmonary circuit. This is a …

Pulmonary vein - Wikipedia

WebApr 19, 2024 · The tunica externa (also called tunica adventitia): The outermost layer of the vein, comprised of connective tissue and nerves; in veins, this is the thickest layer. It protects and strengthens the vein and serves to attach the vein to surrounding structures. WebNov 6, 2024 · The lung veins sometimes referred to as the pulmonary veins, are blood vessels that transfer freshly oxygenated blood from the … crystal smith vdot

Structure and Function of the Pulmonary Circuit - Study.com

WebFigure 20.3 Structure of Blood Vessels (a) Arteries and (b) veins share the same general features, but the walls of arteries are much thicker because of the higher pressure of the blood that flows through them. (c) A micrograph shows the … WebMar 16, 2024 · Alveoli are the smallest structures in the respiratory system. They are arranged in clusters throughout the lungs at the ends of the passageways that bring air into the lungs (respiratory tree). The walls of the alveoli are very thin, which makes it easier for oxygen and CO 2 to pass between the alveoli and very small blood vessels (capillaries). WebMar 23, 2015 · Each pulmonary vein is linked to a network of capillaries (small blood vessels) in the alveoli of each lung. Alveoli are tiny air sacs within the lungs where … crystal smith wedding