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Questions and Answers
The type of joint between the clavicle (sternal end) and sternum (clavicular notch) is:
The ligament that transmits upper limb weight to the clavicle and axial skeleton is:
Which muscle is responsible for the protraction of the scapula?
The movement characterized by the elevation of the arm above 90° is called:
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Which ligament is attached to the margin of the articular surfaces of the acromioclavicular joint?
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The type of movement associated with the trapezius (lower fibers) and pectoralis minor muscles is:
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In which type of joint does a cartilaginous articular disc exist?
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Study Notes
Anatomy of the Shoulder Girdle
- The joint between the clavicle (sternal end) and sternum (clavicular notch) is a saddle joint.
Ligaments and Muscles
- The costoclavicular ligament transmits upper limb weight to the clavicle and axial skeleton.
- The serratus anterior muscle is responsible for the protraction of the scapula.
Shoulder Movements
- The movement characterized by the elevation of the arm above 90° is called abduction.
Acromioclavicular Joint
- The acromioclavicular ligament is attached to the margin of the articular surfaces of the acromioclavicular joint.
Muscle Functions
- The trapezius (lower fibers) and pectoralis minor muscles are associated with elevation and upward rotation of the scapula.
Joint Characteristics
- A synovial joint with a cartilaginous articular disc exists in plane synovial joints.
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Description
Test your knowledge of the types, variety, and structures of the shoulder girdle joints, including synovial and saddle types, articular surfaces, capsules, and ligaments.
