STRUCTURE AND FUNCTIONS OF PARTS OF HUMAN EAR

Biology

STRUCTURE AND FUNCTIONS OF PARTS OF HUMAN EAR

STRUCTURE AND FUNCTIONS OF PARTS OF HUMAN EAR.

The Mammalian Ear

The mammalian ear performs two major functions:

Hearing and detecting changes in the positions of the body to bring about balance and posture.

The ear is divided into three sections.

The Outer Ear

This consists of:

An outer flap, the pinna which is made up of cartilage.
The function of the pinna is to catch and direct sounds.
The external auditory canal is a tube through which sound travel.
The lining of the tube secretes wax, which traps dust particles and microorganisms.
The tympanum is a membrane stretching across the inner end of the external auditory canal.
The tympanum vibrates when it is hit by sound waves.