AskDefine | Define malleus

Dictionary Definition

malleus n : the ossicle attached to the eardrum [syn: hammer] [also: mallei (pl)]

User Contributed Dictionary




malleus (plural mallei)
  1. (anatomy) The small hammer-shaped bone of the middle ear.





malleus, mallei m

Extensive Definition

The malleus or hammer is a hammer-shaped small bone or ossicle of the middle ear which connects with the incus and is attached to the inner surface of the eardrum. The word is Latin for hammer.
It transmits the sound vibrations from the eardrum to the incus.
The malleus is unique to mammals, and evolved from a lower jaw bone in basal amniotes called the articular, which still forms part of the jaw joint in reptiles.

Additional images

Image:Illu auditory ossicles.jpg|Ossicles ’s cartilage and hyoid bar exposed.


External links

[ The Anatomy Wiz]Malleus
malleus in Catalan: Martell (os)
malleus in Danish: Hammer (knogle)
malleus in German: Hammer (Anatomie)
malleus in Spanish: Martillo (hueso)
malleus in Croatian: Čekić (uho)
malleus in Indonesian: Tulang martil
malleus in Italian: Martello (anatomia)
malleus in Latin: Malleus (os)
malleus in Dutch: Hamer (gehoorbeentje)
malleus in Polish: Młoteczek
malleus in Portuguese: Martelo (osso)
malleus in Russian: Молоточек (анатомия)
malleus in Finnish: Vasaraluu
malleus in Thai: กระดูกค้อน
malleus in Chinese: 锤骨
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