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

This suggests that these genetic variants may impact the sarcomere, the basic unit of heart muscle, influencing its structure and function.

From Science Daily

By expressing RBFox1 in immature human stem cell-derived heart cells, the researchers saw enhancements in key indicators of maturation, including cell size, sarcomere structure, contraction, calcium handling and oxygen usage.

From Science Daily

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

Further analyses showed RBFox1 regulated splicing of RNA transcripts linked to heart cell contraction and sarcomere components.

From Science Daily

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