Body Structures & Functions
12th Edition
ISBN: 9781285695495
Author: Scott
Publisher: Cengage
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Describe the mechanism by which sound waves in the outerear are converted into nerve impulses in the inner ear.
Briefly explain how the ear converts vibrations to nerve impulses and discriminates between sounds of different intensity and pitch;
Trace the path taken by sound waves through the structures of the ear and explain how the organ of Corti functions as an auditory receptor.
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- In the ear, sound waves cause the tympanic membrane to vibrate. What happens next in the middle ear? In the inner ear?arrow_forwardFigure 36.14 Cochlear implants can restore hearing in people who have a nonfunctional cochlea The implant consists of a microphone that picks up sound. A speech processor selects sounds in the range of human speech, and a transmitter converts these sounds to electrical impulses, which are then sent to the auditory nerve. Which of the following types of hearing loss would not be restored by a cochlear implant? Hearing loss resulting from absence or loss of hair cells in the organ of Corti. Hearing loss resulting from an abnormal auditory nerve. Hearing loss resulting from fracture of the cochlea. Hearing loss resulting from damage to bones of the middle ear.arrow_forwardThe middle ear functions in _______. a. detecting shifts in body position b. amplifying and transmitting sound waves c. sorting sound waves out by frequencyarrow_forward
- Match each of the following terms with the appropriate description. _____ somatic senses (general senses)a.produced by strong stimulation _____ special sensesb.endings of sensory neurons or specialized cells next to them _____ variations in stimulus intensity _____ action potentialc.taste, smell, hearing, balance, and vision _____ sensory receptord.frequency and number of action potentials e.touch, pressure, temperature, pain, and muscle sensearrow_forwardWhat are the stimuli for taste receptors?arrow_forwardShow an exterior and an internal hearing barrier, then compare and contrast them.arrow_forward
- Which ear structure is correctly matched with its function? a. round window; transmits sound waves into the inner ear b. external acoustic meatus; directs sound waves to the tympanic membrane c. auditory ossicles; dampen sound waves before they reach the inner ear d. vestibular membrane; bends the stereocilia on hair cells to produce a nerve signalarrow_forwarddescribe the parts of the human ear and explain how sound waves move through the ear?arrow_forwardCompare and contrast the senses of taste and smell.arrow_forward
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