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Questions and Answers
Which bones make up the pectoral girdle?
Which bones make up the pectoral girdle?
- Clavicle and scapula (correct)
- Humerus and scapula
- Clavicle and radius
- Clavicle and humerus
Which joint allows the scapula to move freely?
Which joint allows the scapula to move freely?
- Elbow joint
- Acromioclavicular joint (correct)
- Hip joint
- Sternoclavicular joint
How does the clavicle ossify?
How does the clavicle ossify?
- Endochondral ossification
- Both endochondral and intramembranous ossification
- Neither endochondral nor intramembranous ossification
- Intramembranous ossification (correct)
Which joint directly attaches the upper limb to the trunk?
Which joint directly attaches the upper limb to the trunk?
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What bone articulates with the acromion of the scapula?
What bone articulates with the acromion of the scapula?
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Study Notes
Pectoral Girdle
- The pectoral girdle consists of the scapula and clavicle bones.
Scapula Movement
- The scapula is able to move freely due to the sternoclavicular joint.
Clavicle Development
- The clavicle ossifies through intramembranous ossification, meaning it forms directly from mesenchymal tissue.
Attachment of Upper Limb
- The scapula attaches to the trunk directly through the sternoclavicular joint.
Scapula-Acromion Articulation
- The acromion of the scapula articulates with the clavicle bone.
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