knee jerk reflex
https://www.cambridge.org/core/books/basic-physiology-for-anaesthetists/muscle-spindles-and-golgi-tendon-organs/B6BD9BCE77DE45705ACA7EBE77757C17
1.敲擊膝韌帶(patellar ligament)所引發之反射會產生何種運動?..-阿摩線上測驗