The outermost part of an ear is called the pinna, it has extremely fine hairs and glands that secrete wax. This wax is responsible for protecting the ear from foreign organisms and mud from entering.There is an external auditory meatus that is connected to the pinna on the outer side. This external auditory meatus extends to the eardrum; they also have wax glands.The outer ear also consists of a tympanic membrane which is made from animal tissue. The insides are covered with mucosa and skin covers the outer portion.The sound vibrations are received by the pinna, these vibrations reach the eardrum through the external auditory meatus.