Flexor digiti minimi brevis muscle (hand)

Flexor digiti minimi brevis
	The muscles of the left hand. Palmar surface
Details
Latin	musculus flexor digiti minimi brevis manus
Origin	hamate bone
Insertion	ulnar side of the base of the proximal phalanx of minimi
Artery	ulnar artery
Nerve	deep branch of ulnar nerve
Actions	flexes little finger
Antagonist	Extensor digiti minimi muscle
Identifiers
Dorlands; /Elsevier	m_22/12549047
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TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
	Anatomical terms of muscle [[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).\|edit on Wikidata]]]

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The flexor digiti minimi brevis is a muscle in the hand that flexes the little finger. It lies in the same plane as the abductor digiti minimi, on its radial side.

Structure

It arises from the convex surface of the hamulus of the hamate bone, and the palmar surface of the flexor retinaculum of the hand, and is inserted into the ulnar side of the base of the first phalanx of the little finger.

It is separated from the abductor digiti minimi, at its origin, by the deep branches of the ulnar artery and the ulnar nerve. This muscle is sometimes not present; in these cases, the abductor digiti minimi is usually larger than normal.

It is a hypothenar muscle.

Innervation

The flexor digiti minimi brevis, like other hypothenar muscles, is innervated by the deep branch of the ulnar nerve.

Actions

The flexor digiti minimi flexes the little finger.

Etymology

The name of this muscle is Latin for the 'short flexor of the little finger'. Note that brevis is usually included to differentiate it from a longus muscle of the same name. The flexor digiti minimi longus, however, is not found in the typical human, but instead is a rare anatomical variation.