$126 = 2 \times (2 \text{ pectoral girdle} + 6 \text{ upper limb} + 2 \text{ pelvic girdle} + 6 \text{ lower limb})$

Question 1

Which of the following bones is NOT part of the appendicular skeleton?

Accepted Answer

Sternum

Question 2

The pectoral girdle consists of which two bones?

Accepted Answer

Clavicle and scapula

Question 3

Which joint connects the clavicle to the scapula?

Accepted Answer

Acromioclavicular joint

Question 4

A patient presents with a fracture at the sternal end of the clavicle. Which joint is most likely to be affected?

Accepted Answer

Sternoclavicular joint

Question 5

Which of the following correctly describes the anatomical position of the acromial end of the clavicle?

Accepted Answer

Lateral and articulates with the scapula

Question 6

Which bone articulates with the glenoid cavity of the scapula?

Accepted Answer

Humerus

Question 7

If a person falls on their outstretched hand and fractures the lateral end of their clavicle, which structure is most likely to be directly involved?

Accepted Answer

Acromion of the scapula

Question 8

Which of the following is the correct sequence of bones from proximal to distal in the upper limb?

Accepted Answer

Humerus, radius/ulna, carpals, metacarpals, phalanges

Question 9

A dislocation of the acromioclavicular joint would most likely impair which movement?

Accepted Answer

Raising the arm above the head

Question 10

Which of the following statements about the clavicle is TRUE?

Accepted Answer

The sternal end is medial and articulates with the manubrium.

Question 11

Which bone forms the socket for the head of the humerus?

Accepted Answer

Scapula

Question 12

A patient with a fractured clavicle is unable to elevate their shoulder. Which muscle group is most likely affected?

Accepted Answer

Trapezius and deltoid

Question 13

Which of the following equations best represents the total number of bones in the appendicular skeleton?

Accepted Answer

$126 = 2 	imes (2 	ext{ pectoral girdle} + 6 	ext{ upper limb} + 2 	ext{ pelvic girdle} + 6 	ext{ lower limb})$

Question 14

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

Accepted Answer

It attaches the upper limbs to the axial skeleton and allows for a wide range of shoulder movement.

Question 15

A patient has a fracture at the acromial end of the clavicle. Which joint is most likely to be unstable?

Accepted Answer

Acromioclavicular joint

Appendicular Skeleton: Structure and Function

Study Guide - Practice Questions