Ch. 15 The Special Senses
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Problem 8
Which sequence best describes a normal route for the flow of tears from the eyes into the nasal cavity? a. lacrimal canaliculi, lacrimal sacs, nasolacrimal ducts; lb. acrimal ducts, lacrimal canaliculi, nasolacrimal ducts; c. nasolacrimal ducts, lacrimal canaliculi, lacrimal sacs.Problem 14
Taste buds are found on the a. anterior part of the tongue, b. posterior part of the tongue, c. palate, d. all of these.Problem 15
Olfactory nerve filaments are found a. in the optic bulbs, b. passing through the cribriform plate of the ethmoid bone, c. in the optic tracts, d. in the olfactory cortex.Problem 16
Which of the following statements does not correctly describe the spiral organ? a. Sounds of high frequency stimulate hair cells at the basal end, b. the 'hairs' of the receptor cells are embedded in the tectorial membrane, c. the basilar membrane acts as a resonator, d. the more numerous outer hair cells are largely responsible for our perception of sound.Problem 17
The structure that allows pressure in the middle ear to be equalized with atmospheric pressure is the a. pinna, b. pharyngotympanic tube, c. tympanic membrane, d. oval window.Problem 18
Otoliths (ear stones) are a. a cause of deafness, b. a type of hearing aid, c. important in equilibrium, d. the rock-hard petrous part of the temporal bones.Problem 19
How do rods and cones differ functionally?Problem 23
Pitch is to frequency of sound as loudness is to a. quality, b. intensity, c. overtones, d. all of these.Problem 24
Which of the following is important in maintaining the balance of the body? a. visual cues, b. semicircular canals, c. the saccule, d. proprioceptors, e. all of these.Problem 25
Which of the following is not a possible cause of conduction deafness? a. impacted cerumen, b. middle ear infection, c. cochlear nerve degeneration, d. otosclerosis.Problem 26
Where are the olfactory sensory neurons, and why is that site poorly suited for their job?Problem 31
Describe the response of rhodopsin to light stimuli. What is the outcome of this cascade of events?Problem 32
Since there are only three types of cones, how can you explain the fact that we see many more colors?
