ekstensorene

Extensors are a group of muscles responsible for straightening or extending a limb or other body part. They work in opposition to flexor muscles, which bend or flex a limb. When extensor muscles contract, they increase the angle at a joint. For example, the triceps brachii in the upper arm is an extensor muscle that straightens the elbow. Similarly, the quadriceps femoris group in the thigh are extensors that straighten the knee. The muscles of the back, such as the erector spinae, also act as extensors, maintaining an upright posture and extending the spine.

The function of extensors is crucial for a wide range of movements, from standing and walking to lifting objects and performing athletic activities. They are involved in maintaining balance and stability, as well as in propelling the body forward. The coordinated action of extensors and flexors allows for precise and controlled movements. Injuries or conditions affecting extensor muscles can lead to weakness, pain, and difficulty performing everyday tasks. Rehabilitation often involves exercises to strengthen and stretch these muscles to restore function.