This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Function of a muscle spindle is: September 2009 
Select and explain. 
A. Regulates withdrawl reflex, B. Maintains muscle tone, C. Feedback device to maintain muscle length, D. Receptor for inverse stretch reflex
C: Feedback device to maintain muscle length
Answer: C: Feedback device to maintain muscle length 
Explanation: Ans. C: Feedback device to maintain muscle