Questions and Answers
Which muscle is responsible for lifting the arm away from the body?
Deltoid
Which muscle is the largest in the rotator cuff group and crucial for stabilizing and rotating the shoulder?
Subscapularis
Which muscle assists in externally rotating the arm at the shoulder joint?
Infraspinatus
Which muscle is a powerful adductor of the arm at the shoulder joint, bringing the arm toward the body?
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Which muscle is crucial for stability and posture in the upper limbs?
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Study Notes
Muscles of the Shoulder
- The deltoid muscle is responsible for lifting the arm away from the body.
Rotator Cuff Muscles
- The supraspinatus muscle is the largest in the rotator cuff group and is crucial for stabilizing and rotating the shoulder.
External Rotation
- The infraspinatus muscle assists in externally rotating the arm at the shoulder joint.
Adduction of the Arm
- The pectoralis major muscle is a powerful adductor of the arm at the shoulder joint, bringing the arm toward the body.
Posture and Stability
- The trapezius muscle is crucial for stability and posture in the upper limbs.
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Description
Test your knowledge of limb muscles with this quiz. Learn about the major muscles in the upper limbs, such as the deltoid, and their functions in movement and stability. This quiz will help you understand the role of limb muscles in posture and physical activity.
