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sarcomere

Line breaks: sarco|mere
Pronunciation: /ˈsɑːkə(ʊ)mɪə
 
/

Definition of sarcomere in English:

noun

Anatomy
A structural unit of a myofibril in striated muscle, consisting of a dark band and the nearer half of each adjacent pale band.
Example sentences
  • The actin filaments found in the sarcomeres of striated muscles, as well as in stress fibers and microvilli in nonmuscle cells, are stable, unbranched structures.
  • Electron microscopy was used to examine ultrastructural evidence of injury, including sarcomeric disruption, disorganisation of myofilaments, misalignment of adjacent sarcomeres, and distortion or absence of Z-lines.
  • Gradually, new sarcomeres (contractile units) are laid down to share the work load and reduce the wall stress.

Origin

late 19th century: from Greek sarx, sark- 'flesh' + meros 'part'.

Definition of sarcomere in:

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