cévami

Cévami is a term encountered in some contexts to denote the body's network of blood vessels. In standard medical terminology, this system is called the vascular system or circulatory system, and it comprises arteries, veins, and capillaries that transport blood throughout the body.

Arteries carry oxygen-rich blood from the heart to tissues, while veins return blood to the heart. Capillaries are tiny vessels where exchange of oxygen, carbon dioxide, nutrients, and wastes occurs at the tissue level. Major vessels include the aorta, pulmonary artery, pulmonary veins, superior and inferior vena cavae, and key coronary arteries that supply the heart muscle.

Structure and organization vary by vessel type. Arteries typically have thicker, muscular walls to withstand higher pressures; veins have thinner walls and often contain valves to prevent backflow; capillaries are microscopic and consist of a single cell layer that enables exchange between blood and tissues.

Functions extend beyond mere transport. The vascular system distributes oxygen and nutrients, removes carbon dioxide and wastes, helps regulate blood pressure and body temperature, and participates in immune responses through circulating cells and signaling molecules.

Health and disease reflect the system’s complexity. Atherosclerosis narrows arteries and can cause heart attack or stroke; aneurysms are abnormal vessel enlargements; venous disorders include varicose veins and chronic venous insufficiency; thrombosis involves clot formation that can obstruct flow.

Diagnosis and treatment rely on imaging and clinical assessment. Tools such as Doppler ultrasound, CT angiography, and MR angiography visualize vessels; management ranges from lifestyle changes and medications to interventional procedures (angioplasty, stents) and surgery. Prevention emphasizes exercise, a balanced diet, not smoking, and weight management.