The disk also continues posterior through the petrotympanic fissure and attaches to the malleus of middle ear.
In later mammal ancestors, the articular and quadrate separated from the jaw joint while the articular developed into the malleus bone of the middle ear.
The central part of the pars tensa is tented inwards at the level of the tip of malleus and is called the umbo.
Pressure waves move the tympanic membrane which in turns moves the malleus, the first bone of the middle ear.
A cone of light can be seen radiating from the tip of the malleus to the periphery in the antero-inferior quadrant.
He is the first who described the internal and anterior muscles of the malleus and the stapedius, and the complicated figure of the cochlea.
The manubrium (handle) of the malleus articulates with the tympanic membrane, while the footplate of the stapes articulates with the oval window.
The head connects to the "neck of malleus", and the bone continues as the "handle of malleus", which connects to the tympanic membrane.
