Exam 12: Nervous System III: Senses

Your friend slaps you on the arm. Immediately, you feel a sharp, stinging pain that stops promptly after the slap is over. ________ are responsible for this sensation. For about a minute afterward, you feel a dull, lingering sting. ________ are responsible for this sensation.

Taste receptors are

Light is refracted when it passes

A cochlear implant treats

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

Temperature senses use two types of

Colorblindness is inherited.

Optic nerve fibers cross over in the thalamus.

Stretching of tissues can cause pain sensations to arise from visceral organs.

While working in a lab without protective glasses, a researcher accidentally sprays themselves in the eyes with a nerve agent that blocks contraction in smooth muscles. Choose the statement that correctly reflects how the eyes will be affected.

The range of human hearing is about

A young man is cleaning his ear by sliding a cotton swab into the external acoustic meatus as far as he can. He is met with some resistance and, thinking the swab has hit earwax, he pushes harder. He feels a sharp, extreme pain. After the initial shock, he notices that all he can hear from that ear is a constant ringing and nothing else. What damage has he most likely done to the ear?

When you cry, your nose becomes runny because your eye fills with tears produced by the lacrimal gland. The tears drain through the superior and inferior canniculi, enter the lacrimal sac, and drain out through the ________  ________.

Olfactory receptors, which provide the sense of smell, are

Sensory impulses originate at receptors in response to

The auditory ossicles are in the inner ear.

Glaucoma is usually caused by

Movement of hair cells in the semicircular canals signals

A child is affected by strabismus-type "lazy eye", a condition where the muscles of one eye fail to correctly position it and causes a lack of coordination between both eyes. The child's particular strabismus causes one eye to constantly look directly upward. Which extrinsic eye muscle has been weakened in this case?

Stereoscopic vision results when the