The stapes, also known as the innermost ear ossicle, is the only part of the human body that does not grow in size from birth to death. It measures about 3 mm in size at birth and remains the same throughout a person's life.
The stapes is one of three small bones in the middle ear that transmit sound vibrations from the eardrum to the inner ear. Its small size and unique shape allow it to vibrate efficiently, contributing to our ability to hear.
