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Hepatic lobules are the functioning units of the liver. Each of the
approximately 1 million lobules consists of a hexagonal row of hepatic cells
called hepatocytes. The hepatocytes secrete bile into the bile channels and also
perform a variety of metabolic functions. Between each row of hepatocytes are
small cavities called sinusoids. Each sinusoid is lined with Kupffer cells,
phagocytic cells that remove amino acids, nutrients, sugar, old red blood cells,
bacteria and debris from the blood that flows through the sinusoids.This web page uses frames, but your browser doesn't support them.