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glomerulus

A tiny ball of capillaries in the kidney that filters the blood as the first step in making urine.

gloh-MAIR-yuh-lus noun

What it means

Each kidney has about a million nephrons, and each begins with a glomerulus. Blood pressure pushes water and small particles out of the blood into the tubuleTOO-byoolA very small tube in the body, most often one of the tiny tubes in the kidney that turn filtered fluid into urine.Full entry , while blood cells and large proteins stay in. The glomerular filtration rate (GFR) measures how well the kidneys filter; inflammation of the glomeruli is glomerulonephritis.

At a glance

Spanishglomérulo
Also writtenglomeruli

Related terms

chronic kidney disease

Kidney damage or reduced kidney function that lasts longer than three months.

capillary

One of the tiniest blood vessels, joining the smallest arteries to the smallest veins.

renal

Relating to the kidneys.

creatinine

A waste product of muscle that the kidneys remove from the blood; its blood level is used to measure how well the kidneys work.

tubule

A very small tube in the body, most often one of the tiny tubes in the kidney that turn filtered fluid into urine.

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