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sarcoplasmic reticulum

[ sahr-kuh-plaz-mik ]

noun

, Cell Biology.
  1. a system of membrane-bound tubules that surrounds muscle fibrils, releasing calcium ions during contraction and absorbing them during relaxation.

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Word History and Origins

Origin of sarcoplasmic reticulum1

First recorded in 1950–55; sarco- + plasm(a) + -ic

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sarcoplasmsarcopterygian

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