1. Which muscle is primarily responsible for scapular retraction during the rowing motion? A. Trapezius B. Rhomboids C. Latissimus dorsi D. Pectoralis major Correct Answer: B. Rhomboids Rationale: The rhomboids are responsible for scapular retraction, which is a key movement in the rowing exercise. This action is essential for maintaining proper shoulder alignment and function during the movement. 2. During an overhead press, which muscle group is most active in stabilizing the shoulder joint? A. Rotator cuff muscles B. Deltoids C. Biceps brachii D. Triceps brachii Correct Answer: A. Rotator cuff muscles Rationale: The rotator cuff muscles play a crucial role in stabilizing the shoulder joint, particularly during overhead movements. They ensure the head of the humerus remains securely within the glenoid fossa, preventing injury. 3. What is the primary function of the transverse abdominis in the human movement system? A. Hip flexion B. Spinal rotation C. Trunk stabilization D. Lateral flexion Correct Answer: C. Trunk stabilization Rationale: The transverse abdominis is the deepest layer of the abdominal muscles and acts as a 'corset' to provide stability to the