7. The Skeletal System

At the glenoid cavity, the scapula articulates with the proximal end of the (a) humerus, (b) radius, (c) ulna, (d) femur.

The 'elbow bone' is called the:

a. Trochlea

b. Capitulum

c. Olecranon

d. Deltoid tuberosity

The only bone of the arm is the _______. The forearm consists of the medial ______and the lateral_____.

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

Justiniano worked in a poultry-packing plant where his job was cutting open chickens and stripping out their visceral organs. After work, he typed for long hours on his computer keyboard, writing a book about his work in the plant. Soon, his wrist and hand began to hurt whenever he flexed it, and he began to awaken at night with pain and tingling on the thumb half of his hand. What condition did he probably have?

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?

The bones of the hand articulate distally with the:

(a) Carpal bones

(b) Ulna and radius

(c) Metacarpals

(d) Phalanges

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?