sarcoplasmic-reticulum

sarcoplasmic reticulum

[sahr-kuh-plaz-mik]
noun Cell Biology.
a system of membrane-bound tubules that surrounds muscle fibrils, releasing calcium ions during contraction and absorbing them during relaxation.

Origin:
1950–55; sarco- + plasm(a) + -ic

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Medical Dictionary

sarcoplasmic reticulum n.
The endoplasmic reticulum found in striated muscle fibers.

The American Heritage® Stedman's Medical Dictionary
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