The Eye
Eyes receive light rays and transmit impulses from the rays to the optic nerve, which carries the impulses to the brain.
What is an astigmatism?
A warping or curvature of the cornea that causes blurred vison at any distance.
how do the ears work?
Sound waves go to the auditory nerve in the ear, which the carries impulses to the brain for the interpretation hearing
What is hearing loss?
When someone loses the ability to hear.
How are we able to smell?
The sense of smell is made possible by olfactory chemoreceptor cells.
What is the iris?
The colored part of the eye.
What are Cataracts?
What are the three sections of the ear?
Outer middle, and inner ear
What is Meniere Disease?
results from the collection of fluid in the labyrinth of the inner ear and a degeneration of the hair cells in the cochlea and vestibule.
How many smells can the nose detect?
6,000 different smells.
What glands produce tears
Lacrimal Gland
What is Glaucoma?
When there is an increase i the intraocular pressure caused by an excess amount of aqueous humor.
What are the visible parts of the outer ear?
Pinna and auricle
An inflammation or infection of the middle ear is caused by a bacterium or virus.
How many senses can a singular receptor sense?
Only one type.
What are the three main layers of the eye
Sclera, choroid coat, and retina
What is Strabismus?
The eyes don't move or focus together, so they move inward or outward, up or down.
What bones does the middle ear contain?
Malleus, incus, and the stapes
What is Otitis Externa
Inflammation of the external auditory canal
What do mechanoreceptors do
Sense pressure and touch
Wy are the aqueous humor and vitreous humor important?
Maintains the shape of the eye and refracts light.
What is Macular Degeneration?
Major cause of vision loss and blindness that is caused by damage to the blood vessels that nourish the retina.
What are semi circle canals?
Located on the inside of the ear, contains liquid and delicate, hairlike cells
An inherited disease, is a bony overgrowth of the footplate of the stapes.
What do nociceptors do?
Reacts to pain