Stapedius muscle - stapedius

Japanese: あぶみ骨筋 - あぶみこっきん

…There are two small muscles inside the ear cavity that contract loudly around the ossicles and are thought to have a protective effect on the inner ear: the stapedius muscle, which attaches to the stapes bone, and the tensor tympani muscle, which attaches to the malleus bone. The inner ear is located within the bones of the middle ear.

From the ears

…The stapes is stirrup-shaped, about 3.3 mm high, with the base of the stapes being roughly oval, about 3 mm x 1.5 mm, and fits into the vestibular fenestra. Two ossicles are attached to the ossicles: the tensor tympani and the stapedius. The tensor tympani attaches to the upper surface of the Eustachian tube cartilage, bends at a right angle at the spoon-shaped process, and attaches to the upper part of the manubrium of the malleus. …

*Some of the terminology that mentions the "stapedius muscle" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…また，小さな2個の筋肉が鼓室の内側にあり，耳小骨について強大音で収縮し，内耳に対する保護作用をもつと考えられている。あぶみ骨につくあぶみ骨筋と，つち骨につく鼓膜張筋がそれである。中耳腔のさらに内側の骨の中には内耳がある。…