What is extensor?

Extensor muscle is a muscles that works to expand or straightens part of the body and effectively increase the angle between body parts. Extensor muscle examples include muscles that straighten the elbow or knee. The opposite equivalents of the extensor muscles are flexor muscles that work to close the joint, for example to bend the arm on the elbow or knee leg. Examples include muscles that are used to extend the fingers and feet; Extensor leg muscle, called muscle extensor longus, which bends the leg up on the ankle; And important opponents of Pollicis, which serves to bend the basal joint that ensures the opposition of the thumb. There are other important extensor muscles along the back of the back and allowing the spine bending., Superficial muscles and deep muscles. In the forearms there are four main surface extensor muscles called Extensor Digiti mini, Extensor Carpi Radialis Brevis, Extensor Carpi Ulnaris and the muscle Extensor Digitorum. All these muscles are anchored to the bones of the upper arm, humerus, common tendon, znI am as a common extensor tendon. These muscles are primarily used to extend the wrists and fingers.

The main muscle, which works to straighten the arm by stretching the elbow joint, is the triceps brachii extensor muscles. This large muscle is located on the back of the upper arm. Its name means "three heads" in Latin and it is because it has three points of origin, two on the humerus and one on the shoulder blade or scoop. These points arise three muscle bundles and then connect at the elbow. In addition to the Elbow extension, Triceps Brachii Extensor Muscle, it can also keep your arm at a fixed angle, for example for writing.

All muscles of the extensor of the human body are the muscles of the striped type. They are made of mass of parallel fibers called myofibors. These myofibors are made of many long cylindrical cells, each with more cores. In the structure of the extensor muscle, myofibors are held together using connective tissue.