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Tragicus

Other Terms: Musculus tragicus, Muscle du tragus

Muscle parts

Muscle of terminal notch

Latin name

Musculus tragicus

Latin muscle parts

Musculus incisurae terminalis

Group

Branchial arch muscle – second arch (Auricular muscle)

Etymology

In English, this muscle’s name is the muscle of the goat. The term tragicus (for tragus), which is the name for the cartilage flap the covers the opening to the ear, is from the Greek word tragos for “goat.” The early anatomists thought that the hairs that often grow out of the tragus resembled the scraggly hairs on the chin of the goat.

Origin

Base of the tragus of the ear cartilage

Insertion

Apex of the tragus of the ear cartilage

Action

Tense the tragus of the auricular cartilage to help increase the opening into the external acoustic meatus. 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 tragicus

French

Muscle du tragus

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