Trace an auditory stimulus from the time it first reaches the ear until it arrives at the brain. What important event(s) occurs at each step along the way?
What will be an ideal response?
* The outer ear (pinna) gathers sound waves and funnels them down the auditory canal striking the eardrum.
* The eardrum causes the hammer, anvil and stirrup to vibrate, striking the oval window, which leads to the inner ear.
* The movement of the oval window causes the basilar membrane to move the organ of Corti, causing the hair cells to brush against the tectorial membrane.
* The tectorial membrane causes the neurons of the auditory nerve to fire and send the message to the thalamus and the temporal lobe.
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What are the tiny hairs in the inner ear known as?
a. tympanic hairs b. incus, stapes, and malleus c. cilia d. hearing hairs
A CEO of a Midwestern company gave a press briefing and espoused some fairly restrictive regulations aimed at reducing carbon emissions and water pollution. His excellent credibility was probably due to the fact that ________
a) many people in the area work for him b) he is CEO of a chemical company c) TV is an excellent means by which to express one's attitude d) he is highly certain of his views