Podcast
Questions and Answers
Which muscle is responsible for lifting the arm away from the body?
Which muscle is responsible for lifting the arm away from the body?
- Deltoid (correct)
- Teres major
- Subscapularis
- Infraspinatus
Which muscle is the largest in the rotator cuff group and crucial for stabilizing and rotating the shoulder?
Which muscle is the largest in the rotator cuff group and crucial for stabilizing and rotating the shoulder?
- Infraspinatus
- Teres major
- Subscapularis (correct)
- Deltoid
Which muscle assists in externally rotating the arm at the shoulder joint?
Which muscle assists in externally rotating the arm at the shoulder joint?
- Deltoid
- Subscapularis
- Teres major
- Infraspinatus (correct)
Which muscle is a powerful adductor of the arm at the shoulder joint, bringing the arm toward the body?
Which muscle is a powerful adductor of the arm at the shoulder joint, bringing the arm toward the body?
Which muscle is crucial for stability and posture in the upper limbs?
Which muscle is crucial for stability and posture in the upper limbs?
Flashcards
Muscle for arm abduction
Muscle for arm abduction
The deltoid muscle lifts the arm away from the body.
Largest rotator cuff muscle
Largest rotator cuff muscle
The subscapularis muscle stabilizes and rotates the shoulder.
Muscle for external shoulder rotation
Muscle for external shoulder rotation
The infraspinatus muscle rotates the arm outward at the shoulder.
Arm adductor muscle
Arm adductor muscle
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Upper limb posture muscle
Upper limb posture muscle
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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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