sarcotubules

[sär′kō-tōōbyōōlz]
pl.n.
  1. Membranous tubules that constitute a continuous system in striated muscle and correspond to the smooth endoplasmic reticulum of other cells.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.