Q: Which of the following equations best represents the force transmission through the clavicle when supporting a weight $$W$$ with the arm extended laterally?

$$F_{clavicle} = W \sin \theta$$

Question 1

Which bone is most likely to be fractured when a person falls directly onto their shoulder, as depicted in the provided images?

Accepted Answer

Clavicle

Question 2

A patient presents with a visible deformity and pain in the superior thoracic region after a fall. Which anatomical structure is most likely injured?

Accepted Answer

Clavicle

Question 3

Which of the following best describes the function of the clavicle in the pectoral girdle?

Accepted Answer

It acts as a strut to keep the scapula in position, allowing for maximum range of motion of the arm.

Question 4

Which ligament is most likely to be damaged in a shoulder separation injury?

Accepted Answer

Acromioclavicular ligament

Question 5

A radiograph shows a break in the S-shaped bone that articulates with both the sternum and scapula. Which bone is fractured?

Accepted Answer

Clavicle

Question 6

Which anatomical landmark on the scapula articulates with the clavicle?

Accepted Answer

Acromion process

Question 7

If the acromioclavicular joint is disrupted, which movement of the upper limb is most likely to be impaired?

Accepted Answer

Abduction of the arm above the head

Question 8

Which of the following best describes the articulation between the scapula and the humerus?

Accepted Answer

Ball-and-socket joint

Question 9

A patient with a fractured clavicle is at risk for injury to which nearby structure due to its anatomical proximity?

Accepted Answer

Brachial plexus

Question 10

Which of the following equations best represents the force transmission through the clavicle when supporting a weight $$W$$ with the arm extended laterally?

Accepted Answer

$$F_{clavicle} = W \sin 	heta$$

Question 11

Which bone forms the socket of the shoulder joint?

Accepted Answer

Scapula

Question 12

A patient presents with limited abduction and external rotation of the arm. Which structure is most likely involved?

Accepted Answer

Glenohumeral joint

Question 13

Which of the following is a function of the scapula?

Accepted Answer

Provides attachment for muscles of the upper limb

Question 14

Which joint is formed by the articulation of the clavicle with the sternum?

Accepted Answer

Sternoclavicular joint

Question 15

A direct blow to the lateral aspect of the shoulder most commonly results in which type of injury?

Accepted Answer

Fracture of the clavicle

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