Extensor hallucis brevis muscle

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Extensor hallucis brevis
Gray437-Musculus extensor hallucis brevis.png
Muscles of the front of the leg. (Ext. hallucis brevis colored in red.)
Extensor hallucis brevis muscle - animation.gif
Animation
Details
Origin Calcaneus
Insertion Proximal phalanx of digit 1 (hallux, or the great toe)
Artery Dorsalis pedis artery
Nerve Deep fibular nerve
Actions Extend hallux
Antagonist Flexor hallucis brevis muscle
Identifiers
Latin musculus extensor hallucis brevis
TA98 A04.7.02.054
TA2 2670
FMA 51141
Anatomical terms of muscle

The extensor hallucis brevis is a muscle on the top of the foot that helps to extend the big toe.

Contents

Structure

The extensor hallucis brevis is essentially the medial part of the extensor digitorum brevis muscle. Some anatomists have debated whether these two muscles are distinct entities.

The extensor hallucis brevis arises from the calcaneus and inserts on the proximal phalanx of the digit 1 (the big toe).

Nerve supply

Nerve supplied by lateral terminal branch of Deep Peroneal Nerve (deep fibular nerve) (proximal sciatic branches S1, S2). Same innervation of Extensor Digitorum Brevis

Function

The extensor hallucis brevis helps to extend the big toe.

See also

Additional images

Related Research Articles

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Extensor digitorum brevis manus is an extra or accessory muscle on the backside (dorsum) of the hand. It was first described by Albinus in 1758. The muscles lies in the fourth extensor compartment of the wrist, and is relatively rare. It has a prevalence of 4% in the general population according to a meta-analysis. This muscle is commonly misdiagnosed as a ganglion cyst, synovial nodule or cyst.

In human anatomy, a brevis muscle derives its name from the Latin brevis meaning "short", and can refer to: