
One of the few whale species with unfused cervical neck vertebrae is the beluga. They have highly flexible necks as a result of this, and their heads may move in all directions.
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So why doesn’t it burn your stomach? Because a thick layer of mucus protects the stomach lining and keeps the acid on the inside, where it’s churned with your food.
When gastric acid sometimes leaks up into the esophagus, which lacks this mucus layer, you know that burning feeling as heartburn. Proton pump inhibitors are drugs you can take to temporarily reduce acid production and allow the esophagus to heal.
When gastric acid sometimes leaks up into the esophagus, which lacks this mucus layer, you know that burning feeling as heartburn. Proton pump inhibitors are drugs you can take to temporarily reduce acid production and allow the esophagus to heal.