Questions and Answers
What is the unique feature of the clavicle compared to other long bones?
The clavicle is the only long bone in the body that lies horizontally.
What are the articulation points of the clavicle?
The clavicle articulates with the manubrium of the sternum at the sternoclavicular joint and with the acromion of the scapula at the acromioclavicular joint.
What is the function of the clavicle in the body?
The clavicle serves as a strut between the shoulder blade and the sternum, making up the shoulder girdle and keeping the scapula in place so that the arm can hang freely.
Why is the clavicle referred to as 'little key' in Latin?
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What is the location of the clavicle and why is it palpable in some individuals?
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Study Notes
Clavicle Characteristics
- The clavicle is a unique long bone that is S-shaped, which distinguishes it from other long bones.
Articulation Points
- The clavicle articulates with the scapula at the acromioclavicular joint.
- The clavicle also articulates with the sternum at the sternoclavicular joint.
Function of the Clavicle
- The clavicle acts as a sturdy anchor point for the scapula and the entire upper limb.
- The clavicle provides a firm base for the movement of the arm.
- The clavicle helps to protect the neurovascular structures underlying it.
Etymology of the Clavicle
- The clavicle is referred to as the 'clavicula' or 'little key' in Latin due to its resemblance to an ancient Roman key.
Location and Palpability
- The clavicle is located between the scapula and the sternum, forming the anterior part of the shoulder girdle.
- The clavicle is palpable in some individuals, especially those with a smaller muscle mass or a prominent bone structure.
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