Evolution has left humans with many vestigial traits—remnants of once-useful biological features that serve little or no modern purpose. One such example is the muscles around our ears, which in many ...

Vellus hair: This is the fine, almost invisible fuzz that covers much of our bodies, including the outer ear and earlobes. It appears in childhood and regulates body temperature by providing a thin ...

THE non-acoustic functions of the vertebrate ear are localized in the semi-circular canals with their ampullary end organs, and the utriculus, the anterior or uppermost of the two or three otolith ...