Osteology of the Upper Limb (Clavicle)

<p>Deltoid muscle (C)</p> Signup and view all the answers

<p>It gives origin to the deltoid muscle. (B)</p> Signup and view all the answers

<p>Providing stability to the shoulder joint (D)</p> Signup and view all the answers

<p>It is cylindrical in shape. (B)</p> Signup and view all the answers

<p>Deltoid tubercle (A)</p> Signup and view all the answers

<p>It ossifies by two primary centers. (D)</p> Signup and view all the answers

<p>It lies horizontally at the junction of the neck and trunk. (B)</p> Signup and view all the answers

<p>Acromial and sternal ends. (A)</p> Signup and view all the answers

<p>It holds the upper limb far from the trunk. (A)</p> Signup and view all the answers

<p>It has a medullary cavity. (B)</p> Signup and view all the answers

<p>Clavicular head of sternocleidomastoid muscle (D)</p> Signup and view all the answers

<p>It attaches to an oval impression at the medial end. (B)</p> Signup and view all the answers

<p>At 25 years. (D)</p> Signup and view all the answers

<p>S-shaped with a slight curve. (B)</p> Signup and view all the answers

<p>5-6 weeks (D)</p> Signup and view all the answers

<p>The shaft has two primary ossification centers. (D)</p> Signup and view all the answers

<p>Supraclavicular nerve. (B)</p> Signup and view all the answers

<p>Blow to the shoulder or falls on the outstretched hand (C)</p> Signup and view all the answers

<p>It is the weakest point of the clavicle. (D)</p> Signup and view all the answers

<p>It is inserted into the subclavian groove. (C)</p> Signup and view all the answers

<p>19-25 years (B)</p> Signup and view all the answers

Convex forward, origins for pectoralis major.

Concave backward, origins for sternohyoid muscle.

Medial half gives origin to sternocleidomastoid muscle.

Features include costoclavicular ligament and subclavian groove.

Begins before any other bone in a membranocartilaginous manner.

Two centers appear at 5-6 weeks of intrauterine life.

Appears at 19-20 years and fuses by 25 years.

Most common fracture, usually at lateral-medial junction.

Each upper limb contains 32 bones including various types.

The collar bone; a long bone with an S-shaped curve that connects trunk and limb.

Holds upper limb away from the trunk for free movement and transmits forces to the axial skeleton.

Only long bone lying horizontally, subcutaneous, first to ossify, and last to complete ossification.

Composed of three parts: medial end, lateral end, and shaft.

Enlarged and quadrilateral end of the clavicle that articulates with the manubrium.

Flattened end of the clavicle that articulates with the acromion process of the scapula.

The curved section of the clavicle between the two ends.

The shaft is divided into a medial two-thirds and a lateral one-third, with distinct shapes and surfaces.

The medial two-thirds of the clavicle shaft is round and convex forward.

The lateral one-third of the clavicle is flattened and concave forward.

The lateral end of the clavicle is flattened and articulates with the acromion to form the acromioclavicular joint.

The enlarged medial end has a saddle-shaped articular surface connecting to the manubrium sterni at the sternoclavicular joint.

A bony prominence on the inferior surface of the clavicle providing attachment for the conoid part of the coracoclavicular ligament.

The trapezoid ridge extends from the conoid tubercle, also providing attachment for the trapezoid part of the coracoclavicular ligament.

A small tubercle on the anterior border of the clavicle that gives origin to the deltoid muscle.