Giraffe Heart (@giraffeheart)’s videos with original sound - Giraffe Heart
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Giraffe Heart (@giraffeheart)’s videos with original sound - Giraff…
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Giraffe Heart (@giraffeheart)’s videos with original sound - Giraffe Heart
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Giraffe Heart (@giraffeheart)’s videos with original sound - Giraff…
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Watching a giraffe drink is always a lesson in survival. With legs splayed wide and head lowered, this is one of the most vulnerable moments in a giraffe’s day. To make it possible, giraffes rely on a powerful heart, specialised blood vessels, and pressure-sensing receptors that protect the brain from sudden blood flow changes when they lift their heads again. Even at a quiet, low Sabie River like this, drinking is never a relaxed affair. #giraffe #drinking #river | Hayley Myburgh Safari Guide
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When a giraffe lowers its head to drink or eat, gravity sends a huge rush of blood toward the brain. To prevent fainting or brain damage, giraffes have an extremely powerful heart, tight skin and special blood vessels with one way valves that carefully control blood pressure. Standing back up quickly helps restore normal circulation before pressure builds too much. If they stayed down too long, they could literally pass out. So that fast stand up is about survival and biology, avoiding predators
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To protect a giraffe’s brain from sudden blood pressure changes when it drinks, the jugular veins have elastic walls and large one-way valves. This allows them to expand & prevent blood from flowing back to the brain when the head is lowered. #wildearth #giraffe #facts | Wildearth
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