Human Ear and Eye Quiz

EAR

• The ear is an organ for hearing and balance.
• It has three parts: external, middle, and inner ear.

EXTERNAL EAR

• Includes the pinna (auricle) and ear canal.
• The ear canal leads to the eardrum.

MIDDLE EAR

• Contains three tiny bones (ossicles) that amplify sound.
• The eardrum vibrates in response to sound waves.
• The ossicles transmit these vibrations to the inner ear.
• The Eustachian tube connects the middle ear to the throat, equalizing pressure.

INNER EAR

• Contains the cochlea, which transforms sound vibrations into electrical signals.
• The semicircular canals help with balance.
• The auditory nerve transmits signals to the brain.

EYE

• Retinal inflammation is called retinitis.
• Optic neuritis is optic nerve inflammation.
• Subconjunctival hemorrhage is caused by small blood vessels rupture.
• Retinal detachment is detachment of the retina from the pigment layer.
• Orbital fractures and injuries can lead to excessive bleeding, air sinus infections, and airway obstructions.
• Fractures may displace the orbital walls, or it may penetrate to the brain.

VISUAL PATHWAYS

• Light rays stimulate rods and cones in the retina.
• Signals travel via the optic nerve to the optic chiasma.
• The optic tract carries signals to the thalamus.
• Signals reach the visual areas (17 and 18) of the occipital cortex, where objects are recognized.
• Visualized objects are processed as height, width, and colour.
• Both eyes are focused on an object for binocular vision.

Test your knowledge on the anatomy and functions of the human ear and eye. This quiz covers the structure of the outer, middle, and inner ear, as well as common eye conditions such as retinitis and optic neuritis. Challenge yourself and see how much you know about these vital sensory organs!