Vetinerary Assistant Practice Exam

Between which two structures is the carpus located?

1. Radius and ulna

2. Carpals and metatarsals

3. Radius and metacarpal bones

4. Humerus and radius

The correct answer is: Radius and metacarpal bones

The carpus, commonly known as the wrist in humans, is a complex structure composed of several small bones known as carpals. In quadrupeds, like dogs and cats, the carpus is situated between two distinct sets of bones — the radius and the metacarpal bones. The radius is one of the two long bones in the forelimb that contributes to the structure of the foreleg and plays a crucial role in weight-bearing and movement, while the metacarpal bones are the bones that connect the carpus to the digits (fingers or toes). Understanding the anatomy of this region is vital for veterinary professionals as it relates to movement, potential injuries, and conditions affecting the forelimb of animals. The position of the carpus allows for a certain range of motion while providing stability to the limb, which is essential for various movements, including running, jumping, and gripping. Given this context, the other answer options indicate incorrect relationships regarding the carpal structure. The first option speaks to the radius and ulna, which are located in the forearm and do not encompass the carpus between them. The second option incorrectly positions the carpals between themselves and the metatarsals, which are bones of the hind