sarcolemma

American  

[sahr-kuh-lem-uh] / ˌsɑr kəˈlɛm ə /

noun

Anatomy.

1. the membranous sheath of a muscle fiber.

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sarcolemma British  

/ ˌsɑːkəʊˈlɛmə /

noun

1. the membrane covering a muscle fibre

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Other Word Forms

• sarcolemmic adjective
• sarcolemmous adjective

Etymology

Origin of sarcolemma

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

Example Sentences

Figure 29.34 A skeletal muscle cell is surrounded by a plasma membrane called the sarcolemma with a cytoplasm called the sarcoplasm.

From Textbooks • Jun. 9, 2022

The sarcolemma is the site of action potential conduction, which triggers muscle contraction.

From Textbooks • Jun. 9, 2022

The plasma membrane of a skeletal muscle fiber is called the sarcolemma.

From Textbooks • Jun. 9, 2022

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

At each end the cell tapers to a point from which the sarcolemma appears to continue as a fine thread, and this, by attaching itself to the inclosing sheath, holds the cell in place.

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