Q: Which of the following equations best represents the total number of bones in one upper limb, given that the arm, forearm, and hand are included?

$30 = 1 \text{ (humerus)} + 2 \text{ (radius and ulna)} + 27 \text{ (hand)}$

Question 1

Which structure of the pectoral girdle is primarily responsible for transmitting compression forces from the upper limbs to the axial skeleton during activities such as catching oneself during a fall?

Accepted Answer

Clavicle

Question 2

A patient presents with a shoulder injury after a car accident. Imaging reveals a fracture at the acromial end of the clavicle. Which of the following is most likely affected by this injury?

Accepted Answer

Articulation with the scapula

Question 3

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

Accepted Answer

Medial border

Question 4

The glenoid cavity of the scapula is described as shallow. What is the functional consequence of this anatomical feature?

Accepted Answer

Decreased stability but increased flexibility

Question 5

Which bone is the only bone of the arm and articulates with both the scapula at the shoulder and the radius and ulna at the elbow?

Accepted Answer

Humerus

Question 6

During elbow flexion, which process of the ulna fits into the coronoid fossa of the humerus?

Accepted Answer

Coronoid process

Question 7

In anatomical position, which statement correctly describes the relative positions of the radius and ulna?

Accepted Answer

Radius is lateral, ulna is medial

Question 8

A fracture at the distal end of the radius would most directly affect which joint?

Accepted Answer

Wrist joint

Question 9

Which structure connects the radius and ulna along their lengths and provides additional surface area for muscle attachment?

Accepted Answer

Interosseous membrane

Question 10

If the head of the radius is damaged and cannot articulate with the capitulum, which movement would be most affected?

Accepted Answer

Rotation of the forearm (pronation/supination)

Question 11

Which anatomical feature of the humerus provides an articulation site for the ulna at the elbow?

Accepted Answer

Trochlea

Question 12

A patient has difficulty moving their upper limb laterally. Which structure of the clavicle is most likely compromised?

Accepted Answer

Acromial end

Question 13

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

Accepted Answer

Provides attachment for muscles that move the upper limb

Question 14

Which bone of the forearm plays little to no role in hand movement?

Accepted Answer

Ulna

Question 15

If a patient suffers a fracture at the conoid tubercle of the clavicle, which function is most likely to be affected?

Accepted Answer

Attachment of ligaments stabilizing the clavicle

Question 16

Which of the following equations best represents the total number of bones in one upper limb, given that the arm, forearm, and hand are included?

Accepted Answer

$30 = 1 	ext{ (humerus)} + 2 	ext{ (radius and ulna)} + 27 	ext{ (hand)}$

Question 17

Which anatomical feature of the scapula serves as the attachment site for the biceps brachii muscle?

Accepted Answer

Coracoid process

Question 18

A patient is unable to abduct their arm at the shoulder. Which structure is most likely damaged?

Accepted Answer

Glenoid cavity of the scapula

Question 19

Which joint is formed by the articulation of the sternal end of the clavicle and the manubrium?

Accepted Answer

Sternoclavicular joint

Question 20

Which of the following best explains why the upper limb is more mobile than the lower limb?

Accepted Answer

The only direct articulation with the axial skeleton is at the clavicle

Appendicular Skeleton: Structure and Function of the Upper Limb

Study Guide - Practice Questions

Study Guide - Flashcards