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Regions of the brain without Blood Brain Barrier
Which regions of the brain lack a significant Blood Brain Barrier?
The regions of the brain that lack a significant Blood-Brain Barrier (BBB) include:
- Area Postrema: Located in the brainstem, this region is involved in vomiting reflex and can detect toxins in the blood.
- Median eminence of the hypothalamus and Pineal Gland: Situated near the center of the brain, the pineal gland regulates sleep patterns and produces melatonin.
- Neurohypophysis (Posterior Pituitary Gland): This part of the pituitary gland releases hormones like oxytocin and vasopressin directly into the bloodstream.
These areas have a more permeable Blood-Brain Barrier (BBB), allowing substances to pass through more easily compared to other regions of the brain.
