Middle ear ear and throat. The primary function of the middle ear is to efficiently transfer acoustic energy from compression waves in air to fluid–membrane waves within the cochlea. The middle ear contains three tiny bones known as the ossicles: "malleus", "incus", and "stapes". The ossicles were given their Latin names for their distinctive shapes; they are also referred to as the "hammer", "anvil", and "stirrup", respectively. The ossicles directly couple sound energy from the ear drum to the oval window of the cochlea. While the stapes is present in all tetrapods, the malleus and incus evolved from lower and upper jaw
Anvil open the shells of molluscs much as thrushes do, to sea otters that bring stones to the surface and drift on their backs, holding the stones on their chests as anvils on which they break open clams and similar hard-shelled prey. Gulls of various species, some crows, and large birds of prey smash open hard food items, such as bones and tortoises, by dropping them onto rocks. Anvil firing is the practice of firing an anvil into the air using gunpowder. It has been popular in California, the eastern United States and the southern United States, much like how fireworks