Question 1

Which anatomical feature of the scapula serves as the point of articulation with the clavicle?

Accepted Answer

Acromion

Question 2

A patient presents with a fracture at the surgical neck of the humerus. Which major nerve is most at risk of injury in this scenario?

Accepted Answer

Axillary nerve

Question 3

The conoid tubercle is a landmark found on which bone of the pectoral girdle?

Accepted Answer

Clavicle

Question 4

Which structure on the humerus articulates with the ulna to form the elbow joint?

Accepted Answer

Trochlea

Question 5

During a fall on an outstretched hand, which bone of the forearm is most likely to fracture at its distal end?

Accepted Answer

Radius

Question 6

Which anatomical feature of the scapula provides attachment for the biceps brachii muscle?

Accepted Answer

Coracoid process

Question 7

If the acromial end of the clavicle is fractured, which joint is directly affected?

Accepted Answer

Acromioclavicular joint

Question 8

Which border of the scapula is closest to the vertebral column?

Accepted Answer

Medial border

Question 9

A patient has difficulty abducting their arm at the shoulder. Which anatomical feature is most likely involved in this movement?

Accepted Answer

Acromion

Question 10

Which of the following correctly describes the articulation between the radius and ulna at the elbow?

Accepted Answer

The head of the radius articulates with the capitulum of the humerus

Question 11

Which equation best represents the force ($F$) exerted by a muscle attached to the deltoid tuberosity, given the torque ($	au$) and the distance ($r$) from the axis of rotation?

Accepted Answer

$F = \frac{	au}{r}$

Question 12

Which anatomical feature of the humerus is most commonly fractured in elderly patients who fall directly on their shoulder?

Accepted Answer

Surgical neck

Question 13

The interosseous membrane connects which two bones in the forearm?

Accepted Answer

Radius and ulna

Question 14

Which anatomical feature of the ulna forms the bony prominence of the elbow?

Accepted Answer

Olecranon

Question 15

A patient with a dislocated shoulder has lost the normal articulation between the humerus and which part of the scapula?

Accepted Answer

Glenoid cavity

Question 16

Which bone of the pectoral girdle is the only one that directly articulates with the axial skeleton?

Accepted Answer

Clavicle

Question 17

Which anatomical feature of the radius is important for the attachment of the biceps brachii tendon?

Accepted Answer

Radial tuberosity

Question 18

If a patient has a fracture at the acromial end of the clavicle, which ligament is most likely to be affected?

Accepted Answer

Acromioclavicular ligament

Question 19

Which equation describes the mechanical advantage ($MA$) of the forearm when lifting a weight, given the length of the effort arm ($L_e$) and the length of the resistance arm ($L_r$)?

Accepted Answer

$MA = \frac{L_e}{L_r}$

Question 20

Which anatomical feature of the humerus is located on its lateral surface and serves as the attachment for the deltoid muscle?

Accepted Answer

Deltoid tuberosity

Pectoral Girdle and Upper Limb: Bones and Markings

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