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sarcolemma

American  
[sahr-kuh-lem-uh] / ˌsɑr kəˈlɛm ə /

noun

Anatomy.
  1. the membranous sheath of a muscle fiber.


sarcolemma British  
/ ˌsɑːkəʊˈlɛmə /

noun

  1. the membrane covering a muscle fibre

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of sarcolemma

First recorded in 1830–40; sarco- + lemma 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Figure 10.4 Muscle Fiber A skeletal muscle fiber is surrounded by a plasma membrane called the sarcolemma, which contains sarcoplasm, the cytoplasm of muscle cells.

From Textbooks • Jun. 19, 2013

Cellular damage to muscle fibers that occurs after intense exercise includes damage to the sarcolemma and myofibrils.

From Textbooks • Jun. 19, 2013

Long periods of sustained exercise may damage the SR and the sarcolemma, resulting in impaired Ca++ regulation.

From Textbooks • Jun. 19, 2013

The sarcomere itself is bundled within the myofibril that runs the entire length of the muscle fiber and attaches to the sarcolemma at its end.

From Textbooks • Jun. 19, 2013

By this time the parasite has greatly distended the muscle-fibre in which it has hitherto lain, absorbing, with its growth, practically all the contractile-substance, until it is surrounded only by the sarcolemma and sarcoplasm.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various

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