Natural Science CLEP Prep Practice Exam

What kind of joint is found at the elbow?

1. Hinge joint

2. Ball and socket joint

3. Saddle joint

4. Gliding joint

The correct answer is: Hinge joint

At the elbow, there is a hinge joint. This type of joint allows for the flexion and extension of the forearm, but no other movements. Ball and socket, saddle, and gliding joints would allow for more range of motion and would not be found at the elbow. Ball and socket joints, like the shoulder joint, allow for movement in all directions, while saddle joints, like the thumb joint, allow for a wider range of motion than a hinge joint. Gliding joints, like those in the wrist, allow for small, sliding movements rather than the hinge-like action seen at the elbow. Therefore, all of these options are incorrect in regards to the type of joint found at the elbow.