laskimoverkon

Laskimoverkko, known in English as the venous system, refers to the network of veins responsible for returning deoxygenated blood from various tissues of the body back to the heart. It plays a crucial role in the circulatory system by facilitating the removal of waste products and maintaining blood circulation.

The venous system is composed of superficial and deep veins. Superficial veins lie close to the skin's surface and are often visible, such as the great saphenous and small saphenous veins. Deep veins are located deeper within the muscles and tissues, including the femoral and iliac veins. These large vessels are interconnected by perforating veins that allow blood to flow between superficial and deep venous systems.

Venous walls are thinner than arteries and contain valves that prevent the backflow of blood, ensuring unidirectional flow towards the heart. The system is equipped to accommodate varying blood volumes via its extensive network, providing a low-pressure conduit for blood return.

Disorders associated with the laskimoverkko include venous insufficiency, varicose veins, and deep vein thrombosis. These conditions can result from valve malfunctions, vein wall weakness, or blood clots, leading to symptoms such as swelling, pain, and skin changes.

Understanding the structure and function of the venous system is essential for diagnosing and treating vascular diseases. Advances in medical imaging techniques, like Doppler ultrasound, have improved the ability to assess venous health and plan appropriate interventions.