Muscle spindles trigger the muscle to
A) remain fixed. B) lengthen. C) contract. D) relax.
Question 2
Jan is an endurance athlete. Due to her activity level, she needs more calories than the average female. For her to perform at her peak, it is recommended that the majority of her calories come from
A) protein. B) complex carbohydrates.
C) monounsaturated fats. D) polyunsaturated fats.