The+Eye+and+Ear

= Parts of the human eye =

Aqueous Humour - A fluid which fills the eye between the lens and brings the cornea oxygen and nutrients.

Choroid - A layer of the eye which stops radiation that can damage the eye

Ciliary Muscle - The muscle that controls and enables the lens to focus

Cornea - The first and the strongest lens of the optical system

Fovea - is the part of the retina where high resolution vision of final detail happens

Iris - Changes the size of the pupil controling the amount of light that enters the pupil

Lens - focuses on objects at all different distances

Optic Nerve - This nerve is the cable which connects the eyes to the brain

Pupil - The pupil is the hole in the center of the iris that light passes through. The iris muscles control its size.

Retina - It converts light rays into electrical signals and sends them to the brain using the optic nerve

Sclera - This is the white part of the eyeball which protects the inner part of the eye

Vitreous Humour - This is a watery substance which takes up most of the eye.

= Parts of the human ear =

Pinna - The part where it picks up signals from sound waves after entering the ear.

Ear Canal - The space where the sound waves travel to go to the pinna.

Ear Drum - Detects when sound is coming by vibrating when sound waves are entering the ear which turns sound energy into mechanic energy.

Ossicles - The hammer, anvil and the stirrup which are three bones that carry sound vibrations to the inner ear

Cochlea - A tube in which it detects different frequencies shaped like a snail shell.

Semicircular Canals - Filled with fluid and has receptors which message the brain balance

Auditory Nerve - Makes impulses which change to electric impulses media type="youtube" key="oDwUXAPQ_8U" width="425" height="350" align="right"