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Showing results for sarcolemma. Search instead for sarcolemmal.

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

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Muscle contraction usually stops when signaling from the motor neuron ends, which repolarizes the sarcolemma and T- tubules, and closes the voltage-gated calcium channels in the SR.

From Textbooks ● Jun. 19, 2013

The motor end-plate is the location of the ACh-receptors in the muscle fiber sarcolemma.

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

The ACh molecules diffuse across a minute space called the synaptic cleft and bind to ACh receptors located within the motor end-plate of the sarcolemma on the other side of the synapse.

From Textbooks ● Jun. 19, 2013

Within the sarcolemma are minute fibrils and a semiliquid substance, called the sarcoplasm.

From Physiology and Hygiene for Secondary Schools by Francis M. Walters

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