CSCS Practice Exam Questions and Answers 100% Verified
CSCS Practice Exam Questions and Answers 100% VerifiedCSCS Practice Exam Questions and Answers 100% VerifiedCSCS Practice Exam Questions and Answers 100% VerifiedCSCS Practice Exam Questions and Answers 100% Verified1. To which of the following structures do the cross-bridges attach during muscle action? a. actin b. myosin c. M-bridge d. sarcolemma - ANSWER-actin 2. Which of the following substances regulates muscle actions? a. potassium b. calcium c. troponin d. tropomyosin - ANSWER-calcium 3. Which of the following substances acts at the neuromuscular junction to excite the muscle fibers of a motor unit? a. acetylcholine b. ATP c. creatine phosphate d. serotonin - ANSWER-acetylchooline 4. Which of the following muscle fiber types is the MOST beneficial for a marathon runner? a. Type I b. Type IIa c. Type IIx d. Type IIc - ANSWER-Type I 5. When throwing a baseball, an athlete's arm is rapidly stretched just prior to throwing the ball. Which of the following structures detects and responds to that stretch by reflexively increasing muscle activity?
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