Podcast
Questions and Answers
Which joint allows for greater movement of the upper extremity?
Which joint allows for greater movement of the upper extremity?
Which joint restricts clavicle movement and reduces scapula movement?
Which joint restricts clavicle movement and reduces scapula movement?
How many movements are possible in the glenohumeral joint?
How many movements are possible in the glenohumeral joint?
Which joint is located at the lateral end of the clavicle and spine?
Which joint is located at the lateral end of the clavicle and spine?
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Which joint is responsible for flexion and extension of the upper extremity?
Which joint is responsible for flexion and extension of the upper extremity?
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Study Notes
Upper Extremity Joint Movement
- The glenohumeral joint facilitates a wide range of movement for the upper extremity, including rotation, flexion, and extension.
- This ball-and-socket joint allows movements in multiple planes, making it one of the most mobile joints in the body.
Clavicle and Scapula
- The acromioclavicular joint restricts clavicle movement and limits scapula mobility, providing stability at the shoulder region.
- This joint connects the lateral end of the clavicle to the acromion of the scapula, allowing limited movement in comparison to the glenohumeral joint.
Glenohumeral Joint Movements
- The glenohumeral joint can perform a total of seven distinct movements, including abduction, adduction, flexion, extension, internal rotation, external rotation, and circumduction.
- This wide range of motion is essential for various activities involving the shoulder.
Location of the Acromioclavicular Joint
- Situated at the lateral end of the clavicle, the acromioclavicular joint meets with the acromion of the scapula, forming a critical point of articulation in the shoulder girdle.
Upper Extremity Flexion and Extension
- The humeroulnar joint primarily facilitates flexion and extension of the upper extremity, specifically at the elbow.
- This hinge joint allows the arm to bend and straighten, essential for various daily activities.
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Description
Test your knowledge on the proximal upper extremity and shoulder complex articulation with this quiz. Explore the importance of arm movement and stabilization in finger and thumb usage, as well as the different combinations of shoulder and elbow movements that allow the hand to move in space.
