Give the functions of the following parts of the ear. 9. Pinna (b) cochlea (1) Tympanic membranes

The ear is a complex organ responsible for hearing and balance. It consists of several parts, each with specific functions. Here are the functions of the pinna, cochlea, and tympanic membrane:<br /><br />9. Pinna: The pinna, also known as the auricle, is the visible part of the ear that protrudes from the head. Its primary function is to collect and direct sound waves into the ear canal. The shape of the pinna helps to funnel sound towards the ear canal, enhancing the ability to hear.<br /><br />(b) Cochlea: The cochlea is a spiral-shaped, fluid-filled structure located in the inner ear. It plays a crucial role in the process of hearing. The cochlea converts sound waves into electrical signals that can be interpreted by the brain. The fluid inside the cochlea moves in response to sound waves, causing the hair cells within it to bend. This bending generates nerve impulses that are sent to the brain, allowing us to perceive sound.<br /><br />(1) Tympanic Membrane: The tympanic membrane, commonly known as the eardrum, is a thin, cone-shaped membrane located at the end of the ear canal. Its primary function is to vibrate in response to sound waves. When sound waves reach the tympanic membrane, they cause it to vibrate. These vibrations are then transmitted to the ossicles in the middle ear, which further amplify and transmit the sound waves to the inner ear.