sarcomere

American  

[sahr-kuh-meer] / ˈsɑr kəˌmɪər /

noun

Biology.

1. any of the segments of myofibril in striated muscle fibers.

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sarcomere British  

/ ˈsɑːkəʊˌmɪə /

noun

1. any of the units that together comprise skeletal muscle

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sarcomere Scientific  

/ sär′kə-mîr′ /

1. The contractile unit of a skeletal muscle fiber. Sarcomeres are divided into bands of filaments made of actin or myosin. During muscle contraction, the filaments slide over each other to cause shortening of the sarcomere.

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Etymology

Origin of sarcomere

First recorded in 1890–95; sarco- + -mere

Example Sentences

See Examples For:

sarcomere

At the core of this vital organ, intricate processes occur when it contracts, where thick and thin protein-filaments interact within the sarcomere, the fundamental building block of both skeletal and heart muscle cells.

From Science Daily ● Nov. 1, 2023

The scientists suspect, that this allows the thick filament to sense and process numerous muscle-regulating signals and thus to regulate the strength of muscle contraction depending on the sarcomere region.

From Science Daily ● Nov. 1, 2023

Titin chains intertwine with myosin, acting as a scaffold for its assembly and probably orchestrating a length-depending activation of the sarcomere.

From Science Daily ● Nov. 1, 2023

Instead, they slide by one another, causing the sarcomere to shorten while the filaments remain the same length.

From Textbooks ● Jun. 9, 2022

The thick and thin filaments alternate with each other in a structure called a sarcomere.

From Textbooks ● Apr. 25, 2013