the.com/cardia

the gateway where your stomach guards the door against acid sneaking back upstairs

means The cardia is the opening where the esophagus joins the stomach, the upper region that helps keep stomach contents from refluxing back up.

from From Greek 'kardia,' meaning 'heart' — the same root behind 'cardiac' and 'cardiology.' The stomach's upper opening earned the name because it sits near the heart, in the part of the body the ancients called the 'cardiac' region; the word traveled into anatomical Latin and stuck.

name origin
named for resembling the heart's location nearby
valve duty
keeps stomach acid from invading the esophagus
failure mode
a leaky cardia means heartburn and reflux
cancer site
gastric cardia cancers are notoriously hard to catch
for instance

cardia wine region — historic wine-growing area in southern greece, producing wines since ancient times

cardia strait — narrow waterway between turkey and greece in the aegean sea

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