What Is The Action Of The Extensor Digitorum Muscle Quizlet?

What is the action of the extensor digitorum muscle quizlet? The extensor digitorum muscle, also known as the extensor digitorum communis, is the only muscle involved in extension of all four fingers.

What is the function of extensor digitorum longus muscle?

The primary action of the extensor digitorum longus is to extend the lateral four toes at metatarsophalangeal joint. This means that when acting independently, it is unable to extend the entire length of the toes, extending only at metatarsophalangeal, while at the interphalangeal joints the toes remain flexed.

What is most likely to be the action of the extensor digitorum?

Extensor digitorum runs from the lateral epicondyle of humerus to the medial four phalanges of the hand. In this way, it generates the pull for the extension of the four medial fingers in their metacarpophalangeal and both interphalangeal joints. Extensor digitorum also participates in the extension of the wrist.

What is the action of the flexor and extensor hallucis longus?

Extensor hallucis longus muscle
Artery anterior tibial artery
Nerve deep fibular nerve deep peroneal nerve, L5 (L4-S1)
Actions Extends (raises) the big toe and assists in dorsiflexion of the foot at the ankle. Also is a weak evertor/ invertor
Antagonist Flexor hallucis longus, Flexor hallucis brevis

Which of the following is an action of the extensor hallucis longus?

The muscle acts in three foot joints; talocrural, metatarsophalangeal and interphalangeal joints. The main action of extensor hallucis longus is to extend the big toe, but it has accessory actions in other joints as well.

Related guide for What Is The Action Of The Extensor Digitorum Muscle Quizlet?

What is the function of extensor?

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 does extensor digitorum mean?

Medical Definition of extensor digitorum communis

: a muscle on the back of the forearm that extends the fingers and wrist.

What compartment is extensor digitorum longus in?

The anterior compartment, also known as the extensor compartment, contains muscles that dorsiflex or extend the foot at the ankle joint, and muscles that flex the toes. They are tibialis anterior, extensor digitorum longus, extensor hallucis longus, and fibularis tertius.

What is the origin of the extensor digitorum longus muscle?

Origin. Most of extensor digitorum longus arises from the anterior surface of the medial surface of the fibula and the upper part of anterior surface of the interosseus membrane, while a small part arises from the lateral tibial condyle.

What artery supplies the extensor digitorum brevis?

Two lateral branches from the dorsalis pedis artery supply the extensor brevis muscle: the lateral tarsal artery and the artery to extensor hallucis brevis, respectively. The muscle is innervated by a branch of the deep peroneal nerve.

Which of the following is an action of the flexor digitorum longus?

Function. Similar to the flexor hallucis longus and tibialis posterior muscles, the flexor digitorum longus muscle functions to plantar flex and invert the foot. The flexor digitorum longus muscle is responsible for the movement and curling of the second, third, fourth and fifth toes.

What is the role of the long extensor muscle of the toes which toes does it control quizlet?

is a thin muscle, situated between the Tibialis anterior and the Extensor digitorum longus that functions to extend the big toe, dorsiflex the foot, and assists with foot eversion and inversion.

What is the origin insertion and action of the flexor digitorum longus?

Flexor digitorum longus muscle

Origin Posterior surface of tibia (inferior to soleal line)
Insertion Bases of distal phalanges of digits 2-5
Action Metatarsophalangeal and interphalangeal joints 2-5: toe flexion Talocrural joint: foot plantar flexion Subtalar joint: foot inversion
Innervation Tibial nerve (L5, S1, S2)

What is the action of the flexor carpi Radialis?

The main function of FCR is providing flexion of the wrist and assisting in abduction of the hand and wrist. The flexor carpi radialis (FCR) muscle has been suggested to act as a dynamic scaphoid stabilizer.

What is the action of flexor digitorum profundus?

The flexor digitorum profundus is a muscle in the forearm of humans that flexes the fingers (also known as digits). It is considered an extrinsic hand muscle because it acts on the hand while its muscle belly is located in the forearm.

What is flexor digitorum Superficialis?

The flexor digitorum superficialis flexes the middle phalanges of the medial four digits at the proximal interphalangeal joints. It also flexes the proximal phalanges at the metacarpophalangeal joints and the wrist joint. Flexor digitorum superficialis can flex each finger it serves independently.

What is the function of flexor and extensor?

Flexors and Extensors: What Make Them Skeletal Muscles

Flexors and extensors are at the core of this. Together, they bend and straighten the body's joints to create motion and activate other muscle groups, generating muscle activity -- which is another way to say working out.

What are the actions of the tibialis anterior?

The tibialis anterior muscle is a muscle in humans that originates along the upper two-thirds of the lateral (outside) surface of the tibia and inserts into the medial cuneiform and first metatarsal bones of the foot. It acts to dorsiflex and invert the foot. This muscle is mostly located near the shin.

What is the action of lateral compartment leg muscles?

The lateral compartment of the leg, also known as the peroneal compartment, is one of the four compartments in the leg between the knee and foot. Muscles within this compartment primarily produce ankle and foot eversion.

What does digitorum mean?

a Latin word meaning "of the fingers or toes," used in the medical names and descriptions of some muscles. SMART Vocabulary: related words and phrases. The hand. carpal. carpometacarpal.

What is the action of the flexor digitorum brevis?

Flexor digitorum brevis muscle
Nerve Medial plantar nerve
Actions Flexion of the lateral four digits
Antagonist Extensor digitorum longus and Extensor digitorum brevis

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