In this video, I discuss the blood-brain barrier, a complex that surrounds most of the blood vessels in the brain and protects the brain from potentially dangerous substances that might be circulating in the blood stream. I discuss the tight junctions of endothelial cells as one of the main structural components of the blood-brain barrier, as well as describe the contribution of astrocytic end-feet to the formation and maintenance of the blood-brain barrier. Finally, I discuss the circumventricular organs as structures in the brain that lack a blood-brain barrier.
Welcome to Neuroscientifically Challenged! All of the content for the site is collected on this home page, but if you're looking for specific types of content you can use the menu bar above. By clicking on Articles, you'll find links to blog articles on a variety of different neuroscience topics. The Know Your Brain link will take you to a listing of reference articles, each of which deals with a different part of the nervous system. Clicking on the 2-Minute Neuroscience Videos link will take you to an assortment of 2-minute videos that each teach you about a different aspect of neuroscience. And the Glossary contains a large selection of definitions for common neuroscience terms.