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43 results for “blood brain barrier”
- The Perpetually Curious! › CanonicalGateway
🦟 One Bite, Many Possible Paths: What a Mosquito Can Set in Motion
A blood-feeding female mosquito performs a remarkably small act: it pierces the skin and takes a blood meal. Yet what follows can range from almost nothing at all to an itchy welt, an unusually strong local reaction, or, under very different circumstances, an infection that…
- The Perpetually Curious! › CanonicalGateway
🧠 Beyond the Fear Center: What the Amygdala Contributes to Emotion
The amygdala is often introduced as the brain’s “fear center,” as though a small switch deep in the temporal lobes turns fear on. The label points toward important biology, but it compresses several distinct processes into one place.
- The Perpetually Curious! › CanonicalGateway
❀ When a Cacao Visitor Becomes a Pollinator
Cacao flower pollination depends on more than the arrival of a tiny visitor. The decisive transfer takes place inside a blossom measuring only about 0.4 to 0.6 inches (10 to 15 millimeters) in height, where pollen must reach the stigma through an unusually constrained floral structure.