Extensor hallucis longus muscle
- Extensor hallucis longus muscle
Infobox Muscle
Name = PAGENAME
Latin = musculus extensor hallucis longus
GraySubject = 129
GrayPage = 481
Caption = The mucous sheaths of the tendons around the ankle. Lateral aspect. (Ext. hall. long. labeled at upper left.)
Caption2 = Cross-section through middle of leg. (Extensores longi digitorum et hallucis labeled at upper left.)
Origin = Arises from the middle portion of the fibula on the anterior surface and the interosseous membrane
Insertion = Inserts on the dorsal side of the base of the distal phalanx of the big toe
Blood = anterior tibial artery
Nerve = peroneal nerve
Action = Extends the big toe and assists in dorsiflexion of the foot at the ankle. Also is a weak invertor
Antagonist = Flexor hallucis longus, Flexor hallucis brevis
MeshName =
MeshNumber =
DorlandsPre = m_22
DorlandsSuf = 12548925
The Extensor hallucis longus 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 inversion.
It arises from the anterior surface of the fibula for about the middle two-fourths of its extent, medial to the origin of the Extensor digitorum longus; it also arises from the interosseous membrane to a similar extent.
The anterior tibial vessels and deep peroneal nerve lie between it and the Tibialis anterior.
The fibers pass downward, and end in a tendon, which occupies the anterior border of the muscle, passes through a distinct compartment in the cruciate crural ligament, crosses from the lateral to the medial side of the anterior tibial vessels near the bend of the ankle, and is inserted into the base of the distal phalanx of the great toe.
Opposite the metatarsophalangeal articulation, the tendon gives off a thin prolongation on either side, to cover the surface of the joint.
An expansion from the medial side of the tendon is usually inserted into the base of the proximal phalanx.
Variations
Occasionally united at its origin with the Extensor digitorum longus.
Extensor ossis metatarsi hallucis, a small muscle, sometimes found as a slip from the Extensor hallucis longus, or from the Tibialis anterior, or from the Extensor digitorum longus, or as a distinct muscle; it traverses the same compartment of the transverse ligament with the Extensor hallucis longus.
=Additional
External links
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* - "The Leg: Muscles"
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* [http://www.rad.washington.edu/atlas2/exthallong.html University of Washington]
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2010.
Look at other dictionaries:
extensor hallucis longus muscle — musculus extensor hallucis longus … Medical dictionary
Extensor digitorum longus muscle — The mucous sheaths of the tendons around the ankle. Lateral aspect. (Extensor dig. longus labeled at upper right.) Latin musculus extensor digitorum longus … Wikipedia
Extensor hallucis brevis muscle — Muscle infobox Name = Extensor hallucis brevis Latin = musculus extensor hallucis brevis GraySubject = 129 GrayPage = 490 Caption = The mucous sheaths of the tendons around the ankle. Medial aspect. (Ext. hall. long. labeled at top center.)… … Wikipedia
Flexor hallucis longus muscle — Muscle infobox Name = Flexor hallucis longus muscle Latin = GraySubject = 129 GrayPage = 485 Caption = The mucous sheaths of the tendons around the ankle. Medial aspect. (Flexor hallucis longus visible at bottom center.) Caption2 = Width = 222… … Wikipedia
extensor hallucis longus — extensor hallucis lon·gus lȯŋ gəs n a long thin muscle situated on the shin that extends the big toe and dorsiflexes and supinates the foot … Medical dictionary
Extensor digitorum brevis muscle — Infobox Muscle Name = PAGENAME Latin = musculus extensor digitorum brevis GraySubject = 131 GrayPage = 490 Caption = The mucous sheaths of the tendons around the ankle. Lateral aspect. (Extensor dig. brevis labeled at upper right.) Caption2 =… … Wikipedia
Flexor hallucis brevis muscle — Muscle infobox Name = Flexor hallucis brevis muscle Latin = musculus flexor hallucis brevis GraySubject = 131 GrayPage = 493 Caption = Muscles of the sole of the foot. Third layer. (Flexor hallucis brevis visible at left.) Origin = Insertion =… … Wikipedia
musculus extensor hallucis longus — [TA] long extensor muscle of great toe: origin, front of fibula and interosseous membrane; insertion, dorsal surface of base of distal phalanx of great toe; innervation, deep peroneal; action, dorsiflexes ankle joint, extends great toe … Medical dictionary
Flexor digitorum longus muscle — Muscle infobox Name = Flexor digitorum longus muscle Latin = GraySubject = 129 GrayPage = 485 Caption = Tendons of the foot, medial view. Caption2 = Origin = Insertion = Action = Primary action is Flex digits Antagonist = Extensor digitorum… … Wikipedia
Extensor muscle — An extensor muscle is any muscle that opens a joint increasing the angle between components of a limb, such as straightening the knee or elbow and bending the wrist or spine. With the exception of the knee joint the movement is directed backward … Wikipedia
