Anatomy of the Clavicle
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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?

<p>The clavicle receives its name from Latin clavicula 'little key' because the bone rotates along its axis like a key when the shoulder is abducted.</p> Signup and view all the answers

What is the location of the clavicle and why is it palpable in some individuals?

<p>The clavicle is located between the shoulder blade and the sternum, and it is palpable in some individuals due to less fat in this region, making the bone clearly visible.</p> Signup and view all the answers

Flashcards

Clavicle's Unique Position

The clavicle is the only long bone in the body that lies horizontally.

Sternoclavicular Joint

The joint where the clavicle connects to the sternum.

Acromioclavicular Joint

The joint where the clavicle connects to the acromion of the scapula.

Clavicle's Function

Connects shoulder blade to sternum; keeps scapula in place and allows for free arm movement.

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Latin Name Clavicula

From Latin meaning "little key" for its rotational axis resembling a key, especially in shoulder abduction.

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Palpable Clavicle

Clavicle's visibility on the body, less fat makes it easier to touch.

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Clavicle Location

Located between the shoulder blade and sternum.

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Shoulder Girdle

The set of bones including the clavicle and scapula forming the shoulder joint.

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Scapula

The shoulder blade.

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Sternum

The breastbone, a flat bone in the center of the chest.

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Long Bone

Classification of bones like the humerus or femur, not the clavicle.

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Articulation

A joint where two bones meet

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Joint

Where two bones meet and allow movement.

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Manubrium

The upper part of the sternum.

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Acromion

The outward extension of the scapula.

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Abduction

Movement of a limb away from the midline of the body.

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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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Description

Test your knowledge of the clavicle, a slender, S-shaped long bone that serves as a strut between the shoulder blade and the sternum. Learn about its unique characteristics and important role in the human body.

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