Senses

Anosmia is loss of

smell

The painkiller sold as Ziconotide comes from a

snail

If you were a physician evaluating a young person who has conductive deafness, which of the following would you consider in your differential diagnosis?

A torn tympanic membrane

The function of the round window is to

Dampen vibrations in the perilymph

Olfactory receptors, which provide the sense of smell, are

chemoreceptors.

Farsightedness after the age of forty-five is most likely caused by

loss of lens capsule elasticity.

Henry has hereditary sensory and autonomic neuropathy. He lacks

nociceptors

Another name for pain receptors is

nociceptors.

Opiate drugs used to treat pain come from a

plant

Which of the following are paired correctly?

All of the above

The optic nerves are composed of

Axons of retinal ganglion cells

High spatial resolution in vision is a function of

Cone cells

Hair cells detect

Displacement of the basilar membrane

High-pitched sounds with short wavelengths displace the basilar membrane far from the oval window.

False

Which is not a bone of the middle ear?

Hyoid

The scala vestibuli contains

Perilymph

The cornea

Refracts light through the pupil

In the neural retina, action potentials are generated by

Retinal ganglion cells

Light scattering in the eye is prevented by the...

Retinal pigment epithelium

Glaucoma is usually caused by

accumulation of aqueous humor.

A curvature defect of the lens or cornea in which some parts of an image are in focus on the retina and other parts are blurred and vision is distorted is called

astigmatism.

Light is refracted when it passes

between media of different optical densities at an oblique angle.

As they extend from the retina to the brain, the nerve fibers

from the nasal half of each retina cross over.

Pain impulses are first processed in the

gray matter of the posterior horn.

Stereoscopic vision results when the

images in the eyes are different.

Arnold enters a darkened movie theater on a sunny summer afternoon. It takes many minutes for his eyes to adapt to the darkness because

it takes some time for the retina to rebuild its rhodopsin stores from opsin and retinal.

The Golgi tendon organ is stimulated more when

muscle tension increases.

A person who is colorblind lacks

one type of photopigment.

Receptors for the special senses are found

primarily in the head.

The ability to ignore your socks around your ankles demonstrates

sensory adaptation.

Receptors for the general senses are found

widely distributed throughout the body.

The taste receptor that amino acids such as glutamic acid activate is

umami

As a result of the tympanic reflex,

vibrations are transmitted less effectively to the inner ear.

Sensory impulses are stimulated at receptors by

local changes in their cell membrane potentials.

Taste receptors are

modified epithelial cells.

A pole vaulter keeps track of his position in mid-air through

proprioceptors.

The war veteran experiences an intense burning sensation seeming to come from where his foot had been amputated. He most likely has

reflex sympathetic dystrophy.

Rhodopsin is found in ____ cells.

rod

Lorelei thinks of the days of the week and months of the year as particular colors. She has

synesthesia.

Visual sensations from images focused on the side of the retina are blurred because

there are more rods than cones in this region.