FINALS - Ch. 34 (Special Senses) Flashcards
(23 cards)
The condition in which the lens of the eye has an abnormal shape or the cornea is unevenly curved is:
Astigmatism
As a person ages, what changes is likely to occur in the eardrum?
It shrinks and becomes dull and gray
What is another term for otitis externa?
Swimmer’s ear
The turning inside-out of the lower eyelid is known as:
Ectropin
The immobilization of the stapes within the inner ear
Ostosclerosis
Responds to changes in chemical concentrations
Chemoreceptors
What is the correct sequence of olfactory information?
chemoreceptors>olfactory nerves>olfactory bulb>olfactory tract>cerebum
Where does the majority of refraction (focusing of light rays) in the eye take place?
Cornea
What happens under conditions of low light?
The iris will contract and the pupil will dilate
What is the order of the three tiny bones that transmit sound through the middle ear?
Malleus > incus > stapes
What nerve carries information about position and positional changes?
The vestibular nerve
What is the condition in which the lens of the eye has an abnormal shape or the cornea is unevenly curved
Astigmatism
What is located in the vascular layer of the eye & contains most of the eyes blood vessels?
Choroid
What controls the amount of light entering the eye?
Iris
What allows the eye to focus on images?
Lens
What maintains equal pressure on both sides of the eardum?
Auditory tube
At what age should infants respond to the instruction “No” and quickly turn to the sound of their name?
8-12 months
Highly sensitive to light and function best in dim light but do not provide a sharp image and detect only black, white, and shades of gray?
Rods
Allow vision in bright light, are sensitive to color, and provide detailed images?
Cones
The inner layer of the eye that contains rods and cones
Retina
The area between the semicircular canals and the cochlea that helps detect balance of the body
Vestibule
What response would you expect a provider to give a patient who has an acoustic neuroma in the left ear?
A hearing aid will not help. We can try radiation or remove the tumor surgically
What is responsible for blinking and squinting?
Orbicularis oculi
