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单词 sarcoplasm
释义

Definition of sarcoplasm in English:

sarcoplasm

nounˈsɑːkə(ʊ)plaz(ə)mˈsärkəˌplazəm
mass nounPhysiology
  • The cytoplasm of striated muscle cells.

    〔生理〕肌质,肌浆

    Example sentencesExamples
    • Electron microscopy, however, is essential for diagnosis, demonstrating the rods as electron-dense structures in the sarcoplasm.
    • The changes consisted of disrupted myofibrils, increased numbers of lipid vacuoles in the sarcoplasm, and abnormally small mitochondria containing focal membrane disruptions.
    • In certain skeletal muscle fibers, namely the red or slow contracting muscle fibers, the nuclei may be found scattered throughout the sarcoplasm.
    • Measurements of the rotational diffusion coefficient of proteins within muscle cells were also employed to obtain information about the physical properties of sarcoplasm.
    • Within the sarcolemma is the sarcoplasm, containing all the usual subcellular elements plus long prominent myofibrils.

Derivatives

  • sarcoplasmic

  • adjective
    Physiology
    • Second, there seems to be no significant anisotropy in the sarcoplasmic diffusion of proteins.
      Example sentencesExamples
      • The sarcoplasmic membrane returns to its resting electrical potential (about 60 mV more positive outside), as does the entire T tubule system and the SR membrane.
      • Interestingly, in both ventricles myocytes adjacent to the adipose tissue showed multiple sarcoplasmic vacuoles.
      • It is this cAMP that activates cAMP-dependent protein kinase, or PKA, that phosphorylates various cardiac ion channels in the sarcolemma and within the sarcoplasmic reticulum.
      • Increased cAMP in vascular smooth muscle causes an increase in ionized calcium uptake by the sarcoplasmic reticulum, leaving little ionized calcium to facilitate contraction and resulting in smooth muscle relaxation.

Origin

Late 19th century: from Greek sarx, sark- 'flesh' + plasma.

Definition of sarcoplasm in US English:

sarcoplasm

nounˈsärkəˌplazəm
Physiology
  • The cytoplasm of striated muscle cells.

    〔生理〕肌质,肌浆

    Example sentencesExamples
    • The changes consisted of disrupted myofibrils, increased numbers of lipid vacuoles in the sarcoplasm, and abnormally small mitochondria containing focal membrane disruptions.
    • In certain skeletal muscle fibers, namely the red or slow contracting muscle fibers, the nuclei may be found scattered throughout the sarcoplasm.
    • Electron microscopy, however, is essential for diagnosis, demonstrating the rods as electron-dense structures in the sarcoplasm.
    • Measurements of the rotational diffusion coefficient of proteins within muscle cells were also employed to obtain information about the physical properties of sarcoplasm.
    • Within the sarcolemma is the sarcoplasm, containing all the usual subcellular elements plus long prominent myofibrils.

Origin

Late 19th century: from Greek sarx, sark- ‘flesh’ + plasma.

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更新时间:2025/7/5 14:02:43