kärlgren

Kärlgren is a Swedish term used in anatomy to denote a branch of a blood vessel or lymphatic vessel. It describes the point at which a larger vessel divides into two or more smaller vessels, forming a vascular branching pattern within an organ or region of the body.

In the arterial system, kärlgrenar distribute blood to tissues. They arise from larger vessels and transition into progressively smaller arterioles and capillaries. In veins, kärlgren collect blood from capillaries and feed into larger venous trunks. The geometry and diameter of kärlgrenar influence flow resistance and shear stress, and they contribute to regional perfusion.

Clinical relevance: Blockage, plaque buildup, or rupture at a kärlgren can impair perfusion and complicate procedures such as coronary bypass or carotid endarterectomy. Knowledge of branching patterns is essential in planning interventions and imaging.

Diagnosis and visualization: Imaging modalities such as CT angiography, MR angiography, and Doppler ultrasound can reveal kärlgrenar and help assess stenosis, aneurysms, or occlusions.

Etymology: kärl = vessel; gren = branch in Swedish, reflecting the anatomical concept of vessel branching. Related concepts include angiography, arterial branching, venous drainage, arterioles, and capillaries.