Which statement correctly describes the size of the arterioles and veins on the fundi of the eye?

The correct statement indicates that the veins are larger than the arterioles on the fundi of the eye. In the retinal vasculature, arterioles and venules (the small veins) play distinct roles. Generally, arterioles have narrower lumens compared to their corresponding venules, which is consistent with the anatomical and physiological differences between arteries and veins throughout the body.

In the context of the eye's fundus, it is essential to recognize that the arterioles are responsible for delivering oxygenated blood to the retina, while the larger venules are responsible for carrying deoxygenated blood away. This distinction is reflected in their relative sizes; venules need to accommodate increased blood volume as they collect blood from multiple capillaries, resulting in their larger diameter compared to arterioles.

Understanding this relationship is crucial for assessments of ocular health, particularly in recognizing potential pathological changes, such as those associated with hypertension or diabetes, which can alter the normal appearance of these blood vessels during a fundoscopic examination.