Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to sarcoplasm: myofibril


The cytoplasm of a striated muscle fiber.

sar′co·plas·mat′ic (-măt′ĭk), sar′co·plas′mic (-mĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Anatomy) the cytoplasm of a muscle fibre
ˌsarcoˈplasmic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsɑr kəˌplæz əm)

the cytoplasm of a striated muscle fiber.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sarcoplasm - the cytoplasm of a striated muscle fiber
cytol, cytoplasm - the protoplasm of a cell excluding the nucleus; is full of proteins that control cell metabolism
myofibril, myofibrilla, sarcostyle - one of many contractile filaments that make up a striated muscle fiber
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Fibers cut off by the edge of the HPF were counted as muscle fibers if both a piece of the membrane and a region of the sarcoplasm that the membrane encompasses were visible and unambiguously identifiable as muscle fibers.
Rimmed vacuoles, inclusion bodies, or amorphous substance likely exist in the subsarcolemmal and sarcoplasm of some muscle fibers.
Occasional fibers had inclusions within the sarcoplasm, which appeared rounded, with central irregular eosinophilic and brown areas.
With regard to muscle tissue, physical training promotes alterations in the structures of muscle cells (sarcoplasm) and in their cellular metabolism (Hood et al., 2011).
Located between muscle bundles and sarcoplasm [29], the extra-myo fibrillar water molecules loosely bound to the surrounding matrix in sarcoplasm by intermolecular forces, can be easily released from the cells by minor physical and mechanical forces.
During further maturing, the lysosome membrane permeability was increased and an active release of cathepsin D was observed as well as increase in the concentration of hydrogen ions in the sarcoplasm of the muscular fiber.
Muscular cells are mainly fibrils, sarcoplasm, and the connective tissue, specifically collagen [50].
Other factors include the direct toxicity of catecholamines derivatives [8] and the negative inotropic effect of hypocalcemia (as the calcium is sequestrated in the myocytes' sarcoplasm) [9].
Solid black arrows: necrotic myofibers with pale and homogenous sarcoplasm and pyknotic nuclei; solid white arrows: regenerating myofibers with a small diameter and vesicular central nuclei; and hollow black arrows: centronucleated myofibers.
They can be visualized on light microscopy by the Gomori trichrome stain, appearing as dark blue structures localized in the sarcoplasm, predominantly in regions with disrupted sarcomere structure.
Light microscope examination revealed muscular fiber degeneration, sarcoplasm dissolution, neutrophil infiltration, and erythrocyte diapedesis in muscle tissue from the IR group (Figure 1(b)), and however, skeletal muscle damage was attenuated by methylene blue treatment (Figure 1(c)).
Microscopic comparisons of left ventricles of rats of the PIMD-group without Corvitin or 2-OG therapy revealed that postischemic and postnecrotic alterations comprised the highest depletion of glycogen in the sarcoplasm of cardiomyocytes and the most severe inflammatory infiltrates, located predominantly in the subepicardial layer.