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sarcoplasm

American  
[sahr-kuh-plaz-uhm] / ˈsɑr kəˌplæz əm /

noun

Biology.
  1. the cytoplasm of a striated muscle fiber.


sarcoplasm British  
/ ˈsɑːkəʊˌplæzəm /

noun

  1. the cytoplasm of 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

  • sarcoplasmic adjective

Etymology

Origin of sarcoplasm

First recorded in 1895–1900; sarco- + -plasm

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.

The sliding can only occur when myosin-binding sites on the actin filaments are exposed by a series of steps that begins with Ca++ entry into the sarcoplasm.

From Textbooks • Jun. 19, 2013

Myoglobin is found in the sarcoplasm and acts as an oxygen storage supply for the mitochondria.

From Textbooks • Jun. 19, 2013

During the relaxation phase, tension decreases as Ca++ ions are pumped out of the sarcoplasm and cross-bridge cycling stops.

From Textbooks • Jun. 19, 2013

It is believed that treppe results from a higher concentration of Ca++ in the sarcoplasm resulting from the steady stream of signals from the motor neuron.

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