What type of muscle is the triceps an example of?

The triceps muscle is correctly identified as an extensor because it is primarily responsible for extending the forearm at the elbow joint. In anatomical terms, an extensor muscle functions to increase the angle between body parts, as opposed to flexor muscles, which decrease that angle. The triceps serves to straighten the elbow when contracted, allowing for actions such as pushing or throwing.

In contrast to flexors, which are involved in bending motions (like the biceps, which flex the arm), the triceps actively participates in movements that require extension. The specific role of the triceps as an extensor is fundamental in various physical activities and is essential for maintaining proper arm mechanics. Understanding this classification helps in grasping how muscles work in pairs to facilitate movement, with extensors and flexors performing opposite actions.