Understanding the Structure of the Blood-Brain Barrier (BBB)
Discover the essential components of the Blood-Brain Barrier and its role in protecting the brain.
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The Blood-Brain Barrier (BBB) is a highly selective permeability barrier that separates the circulating blood from the brain's extracellular fluid. Its structure is composed of tightly joined endothelial cells, a basement membrane, astrocyte end-feet, and pericytes. This complex formation helps protect the brain by blocking harmful substances while allowing essential nutrients to pass through. Understanding the BBB is crucial in developing treatments for neurological diseases and ensuring drug delivery to the brain.
FAQs & Answers
- What purpose does the Blood-Brain Barrier serve? The BBB protects the brain by blocking harmful substances while allowing essential nutrients to pass through.
- What are the main components of the Blood-Brain Barrier? The BBB is made up of tightly joined endothelial cells, a basement membrane, astrocyte end-feet, and pericytes.
- How does the BBB affect drug delivery to the brain? The structure of the BBB can impede drug delivery, making it crucial to understand for developing effective treatments.