Arteriole — Free Physiology Illustration | GPAI

Physiology

Arteriole

Small arteriole shown as a short pink-red to bright red tubular blood vessel segment, sometimes slightly curved, tapered, or branching, with smooth rounded outer contours and clean cut or cross-sectioned ends. It has a very narrow round central lumen surrounded by a proportionally thick wall for its size, with a thin pale or pink inner lining and one to a few concentric layers of smooth muscle, giving it a compact artery-like appearance. The vessel is clearly smaller and more delicate than a larger artery but more muscular than a capillary or venule, in a simplified medical illustration style.

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