sarcomere
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See also: sarcomère
English
Etymology
From sarco- (“flesh”) + -mere (“component”), from Ancient Greek σάρξ (sárx) and μέρος (méros).
Pronunciation
Noun
sarcomere (plural sarcomeres)
- The contractile unit of the myofibril of a striated muscle.
- 1997, Kenneth Axen, Kathleen Vermitsky Axen, The Princeton Review Physiology Coloring Workbook, Princeton Review Publishing, Random House, page 51,
- The sarcomere determines the amount of overlap between the actin and myosin filaments and thus, the number of cross-bridges that participate in a given contraction. Since each cross bridge contributes to the contraction, sarcomeres generate their maximal force when their contraction employs the maximal number of cross-bridges between the actin and myosin filaments.
- 2006, Brian R. MacIntosh, Phillip F. Gardiner, Alan J. McComas, Skeletal Muscle: Form and Function, page 5:
- Specific proteins are responsible for the bands and zones within each sarcomere.
- 2012, D. Morgan, “3: Modeling of Lengthening Muscle: The Role of Inter-Sarcomere Dynamics”, in Jack M. Winters, Savio L-Y. Woo, editors, Multiple Muscle Systems, Springer, page 50:
- Of particular importance was the confirmation that the sarcomere lengths are instantaneously unstable for any reasonable assignment of parameters and number of sarcomeres, even as low as 100.
- 1997, Kenneth Axen, Kathleen Vermitsky Axen, The Princeton Review Physiology Coloring Workbook, Princeton Review Publishing, Random House, page 51,
Derived terms
Translations
contractile unit of myofibril in striated muscle
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