muscular contraction

• Processo pelo qual o músculo encurta e fica mais tenso, gerando força e movimento, geralmente em resposta a um estímulo nervoso.

The process by which a muscle becomes shorter and tighter, generating force and movement, typically in response to nerve stimulation.

1. Physiological processB2formal

   The process by which muscle fibers shorten and generate force, enabling movement or maintaining posture.

   Processo fisiológico

   • Muscular contraction is essential for all voluntary movements.
   • The doctor explained how calcium ions trigger muscular contraction.
   • During exercise, repeated muscular contractions build strength.

2. Exercise effectB1informal

   The tightening and shortening of muscles during physical activity.

   Efeito do exercício

   • Weightlifting causes intense muscular contraction in the arms.
   • Stretching before a run helps prevent sudden muscular contractions.
   • The athlete felt a strong muscular contraction in his leg.