Kidney: meaning, definitions and examples

Etymology

• The word 'kidney' comes from the Old English 'cyning', which means 'kid'.
• Historically, the term has been linked to the Old Norse word 'kinni', referring to the organ's shape.
• In Middle English, the term evolved to 'kidneye', reflecting the gradual changes in pronunciation and spelling.

Anatomy

• Each kidney is about the size of a fist and is located at the back of the abdomen.
• They play a critical role in regulating blood pressure and ensuring the body's water and salt balance.
• The kidneys filter around 50 gallons of blood every day to remove waste and produce urine.

Health

• Chronic kidney disease affects millions worldwide but can often be managed with lifestyle changes.
• Kidneys can function with only one working properly, a fact that supports many living donor kidney transplant stories.
• Certain foods and drinks, like cranberries and water, can help support kidney health.

Cultural Significance

• In some cultures, kidneys are considered a delicacy and are featured in traditional dishes.
• The organ has been used metaphorically in literature to symbolize both life and death due to its crucial role in bodily functions.
• In ancient medicine, kidneys were believed to be the seat of emotions and wisdom, similar to the heart.

Science

• Studies have shown that hydration plays a crucial role in kidney function and health.
• Research in nephrology explores innovative treatments like artificial kidneys to help those with kidney failure.
• Kidneys are involved in hormone production, including erythropoietin, which helps regulate red blood cell production.

At #5,223 in frequency, this word belongs to advanced vocabulary. It's less common than core vocabulary but important for sophisticated expression.

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