granular endoplasmic reticulum


Also found in: Dictionary, Encyclopedia.

gran·u·lar en·do·plas·mic re·tic·u·lum

endoplasmic reticulum in which ribosomes are located on the cytoplasmic surface of the cisternae; involved in the synthesis of protein destined to be transported via membrane-bound vesicles to the extracellular space.

granular endoplasmic reticulum

gran·u·lar en·do·plas·mic re·tic·u·lum

(gran'yū-lăr en'dō-plaz'mik rĕ-tik'yū-lŭm)
Endoplasmic reticulum in which ribosomal granules are applied to the cytoplasmic surface of the cisternae; involved in the synthesis and secretion of protein through membrane-bound vesicles to the extracellular space.
Synonym(s): ergastoplasm.
References in periodicals archive ?
Electronic microscopic findings, on the other hand, have revealed the following: swelling of the mitochondria, decrease and disorder in the arrangement of cristae, decrease in the number of the short and irregular microvilli , invagination in the nucleus, vesiculation in the endoplasmic reticulum, a transition from the granular endoplasmic reticulum to smooth one, and inflation within the intercellular area.
Although there were numerous free ribosomes, the granular endoplasmic reticulum was predominant, and bundles of intermediate filaments surrounded the nucleus.
In the cytoplasm of these cells was verified the presence of a rich quantity of granular endoplasmic reticulum very developed (Fig.