It is a part of the human ear that transmit sound from the pinna to the eardrum or tympanic membrane.

You are sweating in your P.E class, which part of your body will protect your eyes against sweat?

When you wake-up in the morning, you notice a beam light passing through your window. What part controls the amount of light your eyes receives?

Which part of the human eye covers the front of the eye and focuses the light that coming through it?

It is like a sensor of your eyes where the image will takes place and changes into electrical messages which delivers to the brain later on.

Which part of the human ear collects all the sound waves and changes it into electrical impulses and will deliver to the brain?

It is the external part of the ear which collects sound waves and directs them into the ear

It is part of the human ears that vibrates when the sound waves hits it.

Which part of the human ear transmits signals from the cochlea or internal ear to the brain?