Sensory System

  • The reason our nose runs when we cry is that tears flow across the eye into the lacrimal duct, which drains into the nasal cavity.
  • Pam tells you she wears glasses because the front of her eye is uneven. She insists she is neither nearsighted nor farsighted. Pam has astigmatism.
  • The black center in the iris is really a hole called the pupil.
  • The conjunctiva is a sac that lines the eyelid.
  • The eyeball has three coats, the sclera, the choroid and the retina.
  • The clear structure is that is called the “window of the eye” is the cornea.
  • The location on the retina that nerve fibers form the optic nerve is the optic disc.
  • The crystalline structure behind the pupil that focuses light rays on the retina is the lens.
  • The pupil constricts when exposed to bright light.
  • The cornea does not conatin blood vessels, so it gets its oxygen and nutrients from lymph fluid.
  • Extrinsic eye muscles allow for eye movement, and are attached to the sclera.
  • The three small bones located in the middle ear are called the malleus, incus, and stapes.
  • The lens of the eye lies directly behind the pupil.
  • The medical term for the shell-shaped part of the inner ear is cochlea.
  • The tube that connects the middle ear cavity and the throat is the eustachian tube.
  • The projections of the tongue that contain taste buds are called papillae.
  • The structure that separates the outer and middle ear is the typmanic membrane.
  • The iris is the colored part of the eye.
  • Peter wears contact lens to see the chalkboard at school. He probably has an eye disorder called myopia.
  • The part of the eye that is removed during cataract surgery is the lens.
  • An ophthalmoscope is used to examine someone complaining of blurred vision.
  • Your best friend has “pinkeye.” You should not share towels with that friend.
  • The eye is protected by the orbital cavity.
  • The medical term for a tiny abscess at the base of any eyelash called a hordeolum or sty.
  • The treatment of glaucoma can be medical or surgical, and involves a goal of lowering intraocular pressure.
  • A condition in which the lens loses elasticity after the age of 40 is presbyopia.
  • The white of the eye is called the sclera.
  • The anterior chamber of the eye is filled with aqueous humor.
  • The size of the iris and pupil is changed by intrinsic muscles.
  • The function of the lens is accommodation.
  • The retina contains visual receptors called rods and cones.
  • The function of vitreous humor maintains eye shape and refract light rays.
  • The correct pathway of vision is cornea, pupil, lens, retina, optic nerve.
  • The tympanic membrane is also known as the eardrum.
  • The outer part of the ear is known as the pinna.
  • The fluid that circulates in the semicircular canals is called endolymph.
  • The organ of Corti is located within the Cochlea.
  • Otitis media is usually treated with antibiotics.
  • Balance can be affected by a disorder of the inner ear.
  • The function of the lacrimal glands is to produce tears.
  • The function of cerumen is protection.
  • The cranial nerve that the nose is connected to is the olfactory nerve.
  • Someone with diplopia would be treated by an ophthalmologist.