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Helicis minor

Other Terms: Musculus helicis minor, Petit muscle de l'hélix

Muscle parts

None

Latin name

Musculus helicis minor

Latin muscle parts

None

Group

Branchial arch muscle – second arch (Auricular muscle)

Etymology

The English name for this muscle is the lesser muscle of the coil. Helicis comes from the Greek word helix meaning a “coil” and in this use designates the coil-like, rounded convex margin of the pinna (ear). The term minor comes from the Greek meion meaning “lesser.” As is typical in anatomical terminology, this comparative reference clues you into the fact that this is a smaller version of a similar shaped larger muscle.

Origin

Base of the helical crus of the external ear.

Insertion

Anterior aspect of the crus of the helix where it curves upward above the tragus.

Action

Assist in adjusting the shape of the anterior margin of the ear cartilage. While this is a potential action in some individuals, in the majority of individuals the muscle modifies auricular shape to a minimal degree.

Nerve supply

Facial nerve (Cranial nerve VII)

Blood supply

Auricular branches of the posterior auricular and occipital arteries.

Latin

Musculus helicis minor

French

Petit muscle de l'hélix

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