痉挛是肌肉收缩,筋缠到关节上了.

Cramps are muscular contractions which tie the tendons into knots.

去极化对于肌肉收缩是必不可少的。

Depolarization is essential for muscle contraction.

钙阳离子在肌肉收缩中起着关键作用。

Calcium cation plays a crucial role in muscle contraction.

肌动蛋白对于肌肉收缩是必不可少的。

Actin is essential for muscle contraction.

尼古丁的受体对于肌肉收缩至关重要。

The nicotinic receptors are crucial for muscle contraction.

细胞内的钙水平在肌肉收缩中起关键作用。

Intracellular calcium levels play a key role in muscle contraction.

在肌肉收缩过程中，肌节的长度会发生变化。

The length of a sarcomere changes during muscle contraction.

兴奋的神经递质在肌肉收缩中起着关键作用。

The excitatory neurotransmitters play a crucial role in muscle contraction.

乙酰胆碱是一种在肌肉收缩中起关键作用的神经递质。

Acetylcholine is a neurotransmitter that plays a crucial role in muscle contraction.

促进和维持神经和肌肉收缩的。

Stimulates and maintains nerve signals and muscle contractions.