When a person falls, a common reaction is to try to catch themselves by sticking out their hands. This will sometimes lead to a fracture in one or both of the bones of the forearm. Because one forearm bone is larger where it articulates with the wrist, this bone tends to absorb more force from the impact and is broken more often, making it the most commonly broken bone in the body. Where would such a break likely occur?

Jack injures himself playing hockey, and the physician who examines him informs him that he has dislocated his pollex. What part of Jack's body did he injure?

(a) his arm

(b) his leg

(c) his hip

(d) his thumb

(e) his shoulder.

Of the two bones in the forearm, which bone is medial?

Arrange the bones of the upper limb from proximal to distal. Some bones may not be included.

Often people will 'crack' their knuckle by pulling on their pointer finger. The cracking sound comes from knuckle where the finger meets the hand. What's another way to describe this location?