muscle filament
[ˈmʌsəl ˈfɪləmənt]
nounpl: muscle filaments
filamento muscular
1. A microscopic protein structure within muscle fibers that is responsible for muscle contraction; can be either thick filaments (composed of myosin) or thin filaments (composed of actin)
The muscle filaments slide past each other during contraction, causing the muscle to shorten.
Os filamentos musculares deslizam um sobre o outro durante a contração, fazendo com que o músculo se encurte.
2. The basic contractile unit component in sarcomeres that enables voluntary and involuntary muscle movements
Thick and thin muscle filaments work together in the sliding filament theory of muscle contraction.
Os filamentos musculares espessos e finos trabalham juntos na teoria do filamento deslizante da contração muscular.
This is a technical/scientific term used primarily in academic, medical, and biological contexts in both Brazil and the United States. It is not commonly used in everyday conversation but is fundamental in physiology, anatomy, and kinesiology education. The term is identical in Brazilian Portuguese and European Portuguese, reflecting the universal nature of scientific nomenclature.
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