Flexor

Flexor is a type of muscle that brings two bones closer together, decreasing the angle between them, such as bending the elbow. This action is called flexion. In humans, flexors are typically located on the interior side of limbs.

Anatomy

Flexor muscles are found throughout the body. In the human arm, the main flexor is the biceps brachii. It is a two-headed muscle that lies on the upper arm between the shoulder and the elbow. The biceps brachii flexes the elbow joint and works in opposition to the triceps brachii, which is an extensor.

In the human leg, the primary flexors are the hamstring muscles. These muscles are located on the back of the thigh and work to flex the knee joint. They work in opposition to the quadriceps, which are the primary extensors of the knee.

Function

Flexor muscles work by contracting, which pulls the attached bones closer together. This movement can be voluntary, such as when you bend your elbow, or involuntary, such as the flexing of your heart muscle during a heartbeat.

Flexor muscles are crucial for many bodily functions, including movement, maintaining posture, and stabilizing joints. They are also involved in many reflex actions.

Disorders

There are several disorders that can affect the flexor muscles. These include:

• Tendonitis: This is inflammation of the tendon, which can cause pain and limit movement. It is often caused by overuse of the muscle.
• Strain: This is a tear in the muscle or tendon, which can cause pain, swelling, and difficulty moving the affected limb.
• Carpal tunnel syndrome: This is a condition that affects the flexor tendons in the wrist, causing pain, numbness, and weakness in the hand.

Treatment

Treatment for disorders of the flexor muscles depends on the specific condition and its severity. It may include rest, physical therapy, medication, or in some cases, surgery.

See also

• Extensor muscle
• Muscle contraction
• Muscle disorders

Flexor Resources
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