Middle ear to sounds of higher frequency, because these are better taken up by the inner ear (which also responds to higher frequencies than those of non-mammals). The malleus, or "hammer", evolved from the articular bone of the lower jaw, and the incus, or "anvil", from the quadrate. In other vertebrates, these bones form the primary jaw joint, but the expansion of the dentary bone in mammals led to the evolution of an entirely new jaw joint, freeing up the old joint to become part of the ear. For a period of time, both jaw joints existed together, one medially and one
Ear pick to remove wax is discouraged by some health professionals for fear of damaging the ear and causing infections. Other than the wide variety of materials used to make them, ear picks vary widely in their tips and embellishments. Disposable plastic ear picks with a cotton swab at one end are increasingly popular. Ear picks are a commonly used item and preferred for ear wax removal in East Asia, South Asia and Southeast Asia, whose dry type of ear wax can be easily removed using the tool. It can be used individually or by another person. The person having his/her ears