Venules and veins The structure of venules and veins is essentially similar structure to arterioles and arteries In contrast to arteries, the tunica media is considerably thinner and the tunica adventitia may form the thickest wall component Post capillary venules have a particularly important function in inflammatory responses, contributing to fluid leakage and leukocyteInstructions For each histology question, pick the one best answer This histology test bank is also useful for the histology questions on the USMLE (USMLE step 1) 1 Which structure receives blood from the capillary bed?Uniting capillaries drain into veins further from capillary bed tunica media increases Veins same 3 coats as arteries tunica interna and tunica media thinner than companion artery, tunica externa thicker many veins contain valves to prevent back flow Aorta
Blue Histology Vascular System
