Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 50.2, Problem 3CC
Summary Introduction
To determine: The impact on hearing if the stapes become fused to other middle ear bones.
Concept introduction:
Middle ear is composed of three bones called “malleus”, “incus” and “stapes”. The primary function of these bones is to transmit vibrations to a structure called an “oval window”.
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WHAT IF? If the stapes became fused to the othermiddle ear bones or to the oval window, how would thiscondition affect hearing? Explain.
1List the structures sound waves would be conducted by from the external environment to the vestibulocochlear nerve. Describe how the various structures of the outer, middle, and inner ear function in hearing.
2What does the macula of utricle or saccule detect? What does the semicircular canal detect? Distinguish between static and dynamic equilibrium.
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Chapter 50 Solutions
Campbell Biology
Ch. 50.1 - Prob. 1CCCh. 50.1 - Prob. 2CCCh. 50.1 - Prob. 3CCCh. 50.2 - How are otoliths adaptive for burrowing mammals,...Ch. 50.2 - Prob. 2CCCh. 50.2 - Prob. 3CCCh. 50.2 - Prob. 4CCCh. 50.3 - Contrast the light-detecting organs of planarians...Ch. 50.3 - Prob. 2CCCh. 50.3 - Prob. 3CC
Ch. 50.3 - Prob. 4CCCh. 50.4 - Explain why some taste receptor cells arid all...Ch. 50.4 - Prob. 2CCCh. 50.4 - Prob. 3CCCh. 50.5 - Contrast the role of Ca2+ in the contraction of a...Ch. 50.5 - Prob. 2CCCh. 50.5 - Prob. 3CCCh. 50.6 - Contrast swimming and flying in terms of the main...Ch. 50.6 - MAKE CONNECTIONS. Peristalsis contributes to the...Ch. 50.6 - WHAT IF? When using your arms to lower yourself...Ch. 50 - Sensory receptors transduce stimulus energy and...Ch. 50 - How are music volume and pitch encoded in signals...Ch. 50 - Prob. 50.3CRCh. 50 - Prob. 50.4CRCh. 50 - What are two major functions of ATP hydrolysis in...Ch. 50 - Which of the following sensory receptors is...Ch. 50 - The middle ear converts (A) air pressure waves to...Ch. 50 - Prob. 2TYUCh. 50 - Prob. 3TYUCh. 50 - Prob. 4TYUCh. 50 - Although some sharks close their eyes just before...Ch. 50 - Prob. 6TYUCh. 50 - EVOLUTION CONNECTION In general, locomotion on...Ch. 50 - Prob. 8TYUCh. 50 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 50 - SYNTHESIZE YOUR KNOWLEDGE Bloodhounds, which are...Ch. 50 - If an egg rolls out of the nest, a mother greylag...
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- Hearing Ear Model Label the following structures on this diagram of the ear: external ear: auricle external acoustic meatus middle ear: tympanic membrane malleus incus internal ear: oval window cochlea semicircular canals bone CN VIII: vestibular branch cochlear branch auditory tube stapes round window temporal Now locate the EAR MODEL and identify these same structures.arrow_forward(Bonus) Deafness and hearing loss are a widespread issue. According to WHO, currently more than 1.5 billion people (nearly 20% of the global population) live with hearing loss. From what you learned about our auditory system, briefly explain what would happen to hearing in each of the following scenarios. (a) the tectorial membrane can't hold its position and is pushing onto the auditory hair cells constantly. (b) the auditory hair cells near the base of the cochlea are damaged and dead. (c) the endolymph potassium concentration is lower than normal. (d) the perilymph potassium concentration is lower than normal.arrow_forwardExplain fully how sound is detected by your inner ear. Be sure to identify and explain the roles of: tympanic membrane, auditory ossicles, endolymph, basilar membrane, hair cells.arrow_forward
- 1.what factors might account for a difference in the acuity of the two ears? Explain. 2. Why is it impossible to taste substances with a dry tongue?arrow_forwardIIber. The pressure wave is dissipated by the stretching of B-Characteristics of Equilibrium and Hearing reviewing the structures for hearing and equilibrium, place the structure or description into the correct bin. ew Available Hint(s) Reset H When traveling in an elevator, you can sense when the elevator is moving Pressure waves in perilymph and endolymph Sensing the movement when you spin while sitting in a swivel chair with your eyes closed Maculae Crista Otoliths Vibrations of tympanic membrane Ampulla Dynamic equilibrium Static equilibrium Hearingarrow_forwardLabel and Describe in details how A-G structure works collectively in the hearing mechanism..arrow_forward
- (a) choose one part of the auditory conductive mechanism--the outer ear or middle ear--and describe how sound is transduced (changed from acoustic energy to mechanical energy) through that part of the auditory system, and (b) comment on how the anatomy of that part of the ear enables normal auditory conductive physiology.arrow_forward(RINNE TEST) If you could hear the sound from the mastoid process, but not the external auditory canal, what specifically would that indicate about your hearing?arrow_forward. List the sequence of events that occurs between the entry of asound wave into the external auditory canal and the firing of actionpotentials in the cochlear nerve?arrow_forward
- Why would you see hearing loss if there is a fluid-filled sac in the middle ear? O The tympanic membrane vibrates too strongly and causes overstimulation of the inner ear. The ossicles are unable to move properly, decreasing the vibration of the inner ear. O This disorder decreases function of cranial nerve VII, the vesibulocochlear nerve. O It blocks your ability to equilibrate air pressure from your Eustachian (auditory) tube.arrow_forwarda) choose one part of the auditory sensorineural mechanism--the inner ear or retrocochlear auditory pathway--and describe how sound is transduced through that part of the auditory system, and (b) comment on how the anatomy of that part of the ear enables normal auditory sensorineural physiology.arrow_forward23. The auditory receptors are located between the?arrow_forward
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