There are two types of tendons present in the hand- extensor tendons and flexor tendons. Extensor tendons present on top of the hand help with straightening the fingers. Whereas, flexor tendons that lie on the palm side of the hand help in bending the fingers.

Which muscles are flexors and extensors?

So, your biceps is described as a "flexor" muscle. In the illustration below, the image on the right shows the biceps flexing. The opposing muscle of a flexor is called the "extensor" muscle. Your triceps is an extensor.

How is flexor different from an extensor?

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.

What is an example of a flexor?

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).

Which muscle is known as flexor muscle?

Flexor muscles. The flexor muscles are the brachialis, the brachioradialis and the brachial biceps (Table 1). Their action is maximal when the elbow is flexed at 90°.

What is Flexion and Extension?

34 related questions found

What are extensor muscles?

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.

What is meant by extensor?

: a muscle serving to extend a bodily part (such as a limb)

What is hip extensors?

The primary hip extensors are the gluteus maximus and the hamstrings (i.e., the long head of the biceps femoris, the semitendinosus, and the semimembranosus). The extensor head of the adductor magnus (described later in this chapter) is also considered a primary hip extensor.

What is flexion an example?

Flexion – bending a joint. This occurs when the angle of a joint decreases. For example, the elbow flexes when performing a biceps curl. The knee flexes in preparation for kicking a ball.

What is flexion give two examples?

Flexion is a movement in which the angle between two body segments gets smaller. Take a minute to think of any two body segments next to each other. Examples are the hand and forearm, thigh and shin, arm and torso, etc.

What are flexor surfaces?

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.

What is flexor extensor reaction?

This normal response is termed the flexor plantar reflex. In some patients, stroking the sole produces extension (dorsiflexion) of the big toe, often with extension and abduction ("fanning") of the other toes. This abnormal response is termed the extensor plantar reflex, or Babinski reflex.

What is flexion of the arm?

Arm flexion represents rotation in the anatomic plane such that the distal humerus moves ventrally. It represents raising the arm and isolated flexion can achieve approximately 150-170° of movement. The opposite movement is arm extension and contributes to the combined movement of shoulder circumduction.

Is the quadriceps a flexor or extensor?

The quadriceps femoris is a hip flexor and a knee extensor. It consists of four individual muscles; three vastus muscles and the rectus femoris. They form the main bulk of the thigh, and collectively are one of the most powerful muscles in the body. It is located in the anterior compartment of the thigh.

Are flexors anterior or posterior?

In cross-section, the forearm can be divided into two fascial compartments. The posterior compartment contains the extensors of the hands, which are supplied by the radial nerve. The anterior compartment contains the flexors and is mainly supplied by the median nerve.

Is the hamstring a flexor or extensor?

Spanning the posterior thigh, the hamstring muscles are the primary knee flexors. With the exception of the short head of the biceps femoris, the hamstrings also perform hip extension.

What is foot flexion?

Plantar flexion is a movement in which the top of your foot points away from your leg. You use plantar flexion whenever you stand on the tip of your toes or point your toes. Every person's natural range of movement in this position is different. Several muscles control plantar flexion.

What are ball and socket joints?

ball-and-socket joint, also called spheroidal joint, in vertebrate anatomy, a joint in which the rounded surface of a bone moves within a depression on another bone, allowing greater freedom of movement than any other kind of joint.

What Is hip Circumduction?

Perry¹ describes circumduction as including a combination of hiking and forward rotation of the pelvis and abduction of the hip, although it remains unclear if a forward rotation of the pelvis indeed occurs and if one or both the hips are abducted during the swing period of the affected limb.

What is flexion hip?

The structure of the hip allows a wide range of motion to (and between) the extreme ranges of anterior, posterior, medial, and lateral movement. Raising the leg toward the front is termed flexion; pushing the leg toward the back is termed extension (Figure 2).

Which are hip flexors?

The hip flexors are a group of muscles, the iliacus, psoas major muscles (also called the iliopsoas), and the rectus femoris, which is a part of your quadriceps. The quadriceps runs down from your hip joint to your knee joint. Every time you take a step, you are using your hip flexor muscles.

What is flexion of knee?

A flexion deformity of the knee is the inability to fully straighten or extend the knee, also known as flexion contracture. Normal active range of motion (AROM) of the knee is 0° extension and 140° flexion.

What is extensor hallucis longus?

The Extensor hallucis longus (EHL) is a thin muscle, situated between the Tibialis anterior and the Extensor digitorum longus.It is located on the lateral side of the leg . It provides the only active extension force to the interphalangeal joint and the primary active extension force to the metatarsophalangeal joint.

Where is the extensor pollicis longus?

Extensor pollicis longus (EPL) is a long muscle located at the deep layer with extensor pollicis brevis, abductor pollicis longus, extensor indicis, and supinator muscle in the posterior compartment of the forearm.

What is extensor pollicis brevis?

The extensor pollicis brevis (EPB) belongs to the deep group of the posterior fascial compartment of the forearm. It is a part of the lateral border of the anatomical snuffbox.