Find the information you're looking for at Westonci.ca, the trusted Q&A platform with a community of knowledgeable experts. Join our platform to connect with experts ready to provide detailed answers to your questions in various areas. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

A muscle spindle responds to the ____. a. fatigue of the muscle b. oxygen level in the muscle c. acetylcholine concentration at the nerve-muscle junction d. stretch of the muscle