Anatomy

As sound waves travel into the ear, they pass from the auditory canal to the: 

•  

  tympanic membrane, auditory ossicles, round window, perilymph, scala vestibuli of the cochlea. 

•  

  tympanic membrane, auditory ossicles, oval window, endolymph, scala vestibuli of the cochlea. 

•  

  tympanic membrane, oval window, auditory ossicles, perilymph, scala vestibuli of the cochlea. 

•  

  tympanic membrane, auditory ossicles, oval window, perilymph, scala vestibuli of the cochlea. 

The three types of cones are designated: 

• red, green, and yellow. 

• red, green, and blue. 

• yellow, red, and blue. 

• red, yellow, and blue.

To what part of the brain are both general and most special senses carried? 

• pons 

• thalamus 

• medulla oblongata 

• hypothalamus 

Select the letter representing the nasolacrimal duct. 

• a

• b

• c

• d

The activation of olfactory receptors requires that the odorant become immersed in: 

 

• saliva. 

• blood. 

• mucus. 

• cerumen. 

What cranial nerve carries information about hearing and head movement to the brain? 

 

• trochlear nerve (CN V) 

• vestibulocochlear nerve (CN VIII) 

• trigeminal nerve (CN IV) 

• abducens nerve (CN VI) 

Where are sensations integrated with memories of past experiences? 

 

• frontal lobe 

• cerebellum 

• parietal lobe 

• limbic system 

The optic disc is known as the blind spot because: 

• the fovea centralis prevents light from striking the optic disc. 

• only rods populate the optic disc. 

• photoreceptors are absent from the optic disc.

• only cones populate the optic disc. 

Place the following steps of nerve impulses in the olfaction pathway in order. 

1. 

primary olfactory cortex in the temporal lobe 

 

2. 

olfactory nerve 

 

3. 

olfactory neurons 

4. 

olfactory bulb 

• 3, 2, 4, 1 

• 3, 4, 2, 1 

• 2, 3, 4, 1 

• 2, 4, 3, 1 

What description best matches the function of stereocilia? 

 

• Bending of the stereocilia produces depolarization or hyperpolarization in hair cells. 

• Stereocilia move up and down when the stapes moves back and forth. 

• Stereocilia transmit movement of the tympanic membrane to the inner ear. 

• Stereocilia are tiny calcium carbonate crystals that increase density in endolymph.