Why Do Some Drugs Make Your Pupils Wider?

The video explains how pupil dilation occurs due to various factors, including medications and recreational drugs. It details the anatomy of the eye, focusing on the iris and pupil, and how different chemicals affect their function. The parasympathetic and sympathetic nervous systems play roles in controlling pupil size, with specific drugs influencing neurotransmitter levels, leading to dilation. The video highlights the effects of adrenaline and other substances on the eye's muscles, providing insight into the physiological processes behind pupil changes.

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