EBK HUMAN BIOLOGY
11th Edition
ISBN: 8220100545931
Author: MCMILLAN
Publisher: Cengage Learning US
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Chapter 14, Problem 2CT
Summary Introduction
To suggest: The reason why rupture of eardrum is necessary to cure a chronic middle-ear infection in Person M.
Introduction: The ear is the hearing organ that detects sound and the movements of the brain. The stimulus is transduced into nerve signals. Nerve signals are then transmitted by the vestibular nerve (eighth cranial nerve) and they result in the sensation of hearing and equilibrium. Anatomically, the ear is divided into three distinct regions, namely external ear, middle ear, and inner ear.
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After chronic ear infections as a kid, my husband experienced what is known as otosclerosis. Basically, his ear bones started to fuse together. This resulted in hearing loss. What type of hearing loss is this, and how can it be treated?
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Chapter 14 Solutions
EBK HUMAN BIOLOGY
Ch. 14 - When a receptor cell detects a specific kind of...Ch. 14 - Name six categories of sensory receptors and the...Ch. 14 - How do somatic sensations differ from special...Ch. 14 - Explain where free nerve endings are located in...Ch. 14 - Prob. 5RQCh. 14 - What are the stimuli for taste receptors?Ch. 14 - How do smell signals arise and reach the brain?Ch. 14 - Label the parts of the ear:Ch. 14 - In the ear, sound waves cause the tympanic...Ch. 14 - Label the parts of the eye:
Ch. 14 - How does the eye focus the light rays of an image?...Ch. 14 - A __________is a specific form of energy that can...Ch. 14 - Awareness of a stimulus is called a ________.Ch. 14 - ____________ is understanding what particular...Ch. 14 - A sensory system is composed of __________. a....Ch. 14 - ___________detect energy associated with changes...Ch. 14 - Detecting substances present in the body fluids...Ch. 14 - Which of the special senses is based on the...Ch. 14 - Rods differ from cones in the following ways: a....Ch. 14 - The outer layer of the eye includes...Ch. 14 - The inner layer of the eye includes the...Ch. 14 - Your visual field is ______________. a. a...Ch. 14 - Match each of the following terms with the...Ch. 14 - Prob. 1CTCh. 14 - Prob. 2CTCh. 14 - Jill is diagnosed with sensorineural deafness, a...Ch. 14 - Larry goes to the doctor complaining that he cant...Ch. 14 - In a rock climber like the man pictured in Figure...
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- When Maddie’s physician examines her ear, he explains to her parents that she has a perforated eardrum. Which of the following statements is NOT true? Maddie is at higher risk for ear infections due to the perforation. Maddie’s eardrum will likely heal on its own and she will not need surgery. A perforated “eardrum” means that there is a tear or hole in Maddie’s tympanic membrane. Maddie has sensorineural hearing loss due to the perforated eardrum.arrow_forwardMilo and Garfield are two friends who have acquired hearing loss, but the cause of hearing loss in Milo is different from that in Garfield. Milo has a conductive hearing loss. He can hear, but not clearly and loudly. The doctor has told Milo that calcium has built up on the bones in his middle ear interfering with their movements. Garfield has neural hearing loss. The doctor has told Garfield that he cannot hear because the auditory nerve cannot transmit electrical impulses from receptors in his inner ear to his brain. By completing the following tasks, help Milo and Garfield understand how their ear works and why they have difficulty hearing sounds. E. Draw and label a diagram showing the position of the bones in the middle ear. F. Explain the function of the bonesinconducting sound. G. Draw and label a diagram showing the inner ear, the position of receptors and the auditory nerve.arrow_forwardJake has a fully intact and functional eardrum, and his cochlea functions perfectly well too. However, the sound energy never arrives at Jake's cochlea from his eardrum. This would suggest that there is damage to Jake's _____. A) Eustachian tube B) tympanic membrane C) ossiclesarrow_forward
- After attending a Fourth of July fireworks extravaganza, Millie finds it difficult to hear normal conversation, and her ears keep “ringing.” What is causing her hearing problems?arrow_forwardA 33-year-old, right-handed roller derby skater comes to you complaining of periodic attacks of tinnitus ("ringing" or "buzzing") in her left ear and vertigo (the sensation that she and her surroundings are moving relative to one another, when she is standing or sitting still). She says these attacks have been becoming more frequent over the past year or so and that now, between attacks, she feels as though she can't hear as well with her left ear as she can with her right. Your examination reveals that the auditory threshold is indeed elevated in her left ear, whether you use air conduction or bone conduction. You also notice that touching either cornea with a wisp of cotton causes her right eye to blink briskly and her left eye to blink somewhat sluggishly. Then you notice that she seems to have a somewhat asymmetrical smile: The right side of her face moves more than the left. Which of the following best accounts for this patient's list of problems? Damage to the left…arrow_forwardWhich of the following statements concerning the inner ear is TRUE? Question 3 options: a) The bony labyrinth within the tempoal bone contains spaces for the semicircular canals and the cochlea. b) The fibers of the cochlear nerve are attached to hair cells in the semicircular canals to carry information about movements of the head. c) The frequency of sound waves as defined by their wavelengths are perceived as pitch and are measured in decibels (dB). d) The saccule and utricle are critical sensory receptors for interpreting language, distinct from other sounds.arrow_forward
- The inner ear is divided into 3 parts. Name the three parts and list the main function of each.arrow_forwardLabyrinthitis is an inflammation of the inner ear. What symptoms would you expect in a patient with this disorder?arrow_forwarda unitaleral lesion in which of the following structures is most likely to cause deafness in one ear? A) cochlear nuclei B) inferior collicus C) medial geniculate D) nucleus of the lemniscus E) superior olivary nucleusarrow_forward
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