Stapedius muscle

Stapedius
Stapedius
	The medial wall and part of the posterior and anterior walls of the right tympanic cavity, lateral view.
	Malleus Tensor tympani Incus Stapedius Labyrinth Stapes Auditory canal Tympanic membrane; (Ear drum) Eustachian tube Tympanic cavity Bones and muscles in the tympanic cavity in the middle ear
Details
Origin	Walls of pyramidal eminence
Insertion	Neck of stapes
Artery	Stapedial branch of posterior auricular artery
Nerve	Facial nerve (nerve to stapedius)
Actions	Control the amplitude of sound waves to the inner ear
Identifiers
Latin	musculus stapedius
MeSH	D013198
TA98	A15.3.02.062
TA2	2103
FMA	49027
	Anatomical terms of muscle

The stapedius is the smallest skeletal muscle in the human body.^[1] At just over one millimeter in length, its purpose is to stabilize the smallest bone in the body, the stapes or stirrup bone of the middle ear.

^ Rea, Paul (2016). "Head". Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck. Elsevier. p. 78. doi:10.1016/b978-0-12-803633-4.00002-8. ISBN 978-0-12-803633-4. The stapedius is the smallest skeletal muscle in the body and is approx- imately 1 mm in length.

[1] Rea, Paul (2016). "Head". Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Head and Neck. Elsevier. p. 78. doi:10.1016/b978-0-12-803633-4.00002-8. ISBN 978-0-12-803633-4. The stapedius is the smallest skeletal muscle in the body and is approx- imately 1 mm in length.

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