Over time, those patients will develop heart failure because injured heart muscle tissue damaged by the heart attack will eventually be replaced by stiff scar tissue.
久而久之，这些病人会得心力衰竭病因为在心脏病突发中损坏的心脏肌肉组织最终会被僵硬的伤疤组织所替代。
2
To check this, your muscles have sensory receptors inside the muscle tissue itself which tell your nervous system just how stiff or relaxed these muscles are.
由此，肌肉组织内部有感觉感受器，通过这些感受器向神经系统传达肌肉的僵硬度或者是松弛度。
3
Tendons transmit force by connecting bones to muscle. They are relatively stiff.