Podcast
Questions and Answers
What is the main function of the shoulder?
What is the main function of the shoulder?
The shoulder translates force and power across the upper limbs, produces movement through the interaction of the scapula-humeral joint, and is one of the most mobile joints, leading to high dislocation rates.
What is the shoulder girdle?
What is the shoulder girdle?
The shoulder girdle refers to the movement of the scapula.
What is the shoulder joint called?
What is the shoulder joint called?
The glenohumeral joint.
Which of the following joints are involved in the shoulder and shoulder girdle? (Select all that apply)
Which of the following joints are involved in the shoulder and shoulder girdle? (Select all that apply)
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Which ligaments are found in the glenohumeral joint?
Which ligaments are found in the glenohumeral joint?
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What structures contribute to the stability of the glenohumeral joint? (Select all that apply)
What structures contribute to the stability of the glenohumeral joint? (Select all that apply)
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Which movements occur at the glenohumeral joint? (Select all that apply)
Which movements occur at the glenohumeral joint? (Select all that apply)
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Which of the following muscles are involved in the glenohumeral joint? (Select all that apply)
Which of the following muscles are involved in the glenohumeral joint? (Select all that apply)
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Which of these muscles belong to the rotator cuff?
Which of these muscles belong to the rotator cuff?
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Which bones does the scapula interact with?
Which bones does the scapula interact with?
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Which movements occur at the shoulder girdle? (Select all that apply)
Which movements occur at the shoulder girdle? (Select all that apply)
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Which of the following muscles are involved in the movements of the shoulder girdle? (Select all that apply)
Which of the following muscles are involved in the movements of the shoulder girdle? (Select all that apply)
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What is a rotator cuff impingement?
What is a rotator cuff impingement?
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What is a shoulder dislocation?
What is a shoulder dislocation?
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Why is shoulder dislocation more likely to occur anteriorly?
Why is shoulder dislocation more likely to occur anteriorly?
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Study Notes
Shoulder and Shoulder Girdle Function
- The shoulder complex, involving the scapula-humeral joint, is a highly mobile joint responsible for translating force across the upper limb.
- This mobility makes it prone to dislocation.
Shoulder Girdle Definition
- The shoulder girdle encompasses the movements of the scapula.
Shoulder Definition
- The shoulder refers to the glenohumeral joint.
Joints of the Shoulder and Shoulder Girdle
- Glenohumeral joint
- Sternoclavicular joint
- Acromioclavicular joint
- Glenohumeral joint (repeated, likely a typo)
- Scapulothoracic joint
Ligaments of the Glenohumeral Joint
- Glenohumeral ligaments (3, anterior)
- Coracohumeral ligament (superior)
Glenohumeral Joint Stability
- Glenoid labrum (fibrous tissue around the glenoid fossa)
- Rotator cuff muscles
Glenohumeral Joint Movements
- External rotation
- Internal rotation
- Flexion
- Extension
- Hyperextension
- Abduction
- Adduction
- Horizontal abduction
- Horizontal adduction
Muscles of the Glenohumeral Joint
- Rotator cuff muscles
- Pectoralis major
- Deltoids
- Latissimus dorsi
- Teres major
Rotator Cuff Muscles
- Supraspinatus
- Infraspinatus
- Teres minor
- Subscapularis (anterior)
Scapula Interactions
- Scapula interacts with the humerus, manubrium, and clavicle.
Shoulder Girdle Movements
- Elevation
- Depression
- Abduction (protraction)
- Adduction (retraction)
- Downward rotation
- Upward rotation
Shoulder Girdle Muscles
- Trapezius
- Rhomboids
- Levator scapulae
- Serratus anterior
- Pectoralis minor
Rotator Cuff Impingement
- Inflammation of the supraspinatus tendon
- Compressing the subacromial space
Shoulder Dislocation
- Humeral head dislocation
- Typically occurs anteriorly.
Anterior Shoulder Dislocation Predisposition
- Most likely when the shoulder is abducted and externally rotated.
- This position makes the shoulder vulnerable due to the lack of anterior protective musculature.
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Description
Test your knowledge on the anatomy and functions of the shoulder complex. This quiz covers the joints, ligaments, and movements associated with the shoulder and shoulder girdle. Perfect for anatomy students and health professionals alike.
