flexor muscle, any of the muscles that decrease the angle between bones on two sides of a joint, as in bending the elbow or knee. Several of the muscles of the hands and feet are named for this function.

By contrast, the flexor surface is the skin on the side of a joint that folds. Directed by a flexor muscle, the flexor surface can be described as areas where folded skin can touch, such as the inside of the elbow or the back of the knee.

The key difference between flexor and extensor muscles is that flexor muscles facilitate the process of flexion in the body, while extensor muscles facilitate the process of extension in the body. On the other hand, extension is the extending movement where the angle between two body parts increases.

The word ‘osteoporosis’ means ‘porous bone. ‘ It is a disease that weakens bones, and if you have it, you are at a greater risk for sudden and unexpected bone fractures.

The flexor muscles start at the elbow and forearm regions, turn into tendons just past the middle of the forearm, and attach to the bones of the fingers (see Figure 1).

Examples of flexor muscles include the brachialis, biceps brachii, pectoralis major (upper limb flexors) and the psoas major and iliacus muscle, also collectively referred to as the iliopsoas (lower limb flexors).

Flexion of the elbow occurs when the lower arm is pulled toward the upper arm, causing the angle between the two to become smaller, while extension is the reverse motion of unbending. The collection of muscles that control elbow flexion are referred to as the flexor group.

The brachialis is the primary flexor of the elbow and is found mainly in the upper arm between the humerus and the ulna. Superficial to the brachialis is the long biceps brachii muscle that runs anterior to the humerus from the scapula to the radius.

Extensor muscle, any of the muscles that increase the angle between members of a limb, as by straightening the elbow or knee or bending the wrist or spine backward. The movement is usually directed backward, with the notable exception of the knee joint.

Flexor muscle. Written By: Flexor muscle, any of the muscles that decrease the angle between bones on two sides of a joint, as in bending the elbow or knee.

The parts of the skin that touch when a joint bends. The flexor surface of the leg is the back of the leg. The extensor surface of the arm is the outer arm, or the parts of the skin on the opposite side of the joint. Extensor surfaces do not touch. anatomically there are flexors and extensor surfaces..

The parts of the skin that touch when a joint bends. The flexor surface of the leg is the back of the leg. The extensor surface of the arm is the outer arm, or the parts of the skin on the opposite side of the joint.

Flexor muscle. Flexor muscle, any of the muscles that decrease the angle between bones on two sides of a joint, as in bending the elbow or knee. Several of the muscles of the hands and feet are named for this function. The flexor carpi radialis and flexor carpi ulnaris stretch from the humerus…