CH 6: Human Ear
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Questions and Answers

What are the three main sections of the human ear?

  • Outer ear, middle ear, inner ear (correct)
  • Round ear, square ear, triangle ear
  • Top ear, bottom ear, side ear
  • Left ear, right ear, back ear

    • Which part of the ear is responsible for directing sound waves into the auditory canal?

  • Ossicles
  • Pinna (correct)
  • Vestibule
  • Semi-circular canals

    • What is the function of the middle ear?

  • Prevent foreign bodies from entering the ear
  • Equalize pressure on both sides of the tympanic membrane
  • Contain structures like semi-circular canals
  • Transmit and amplify vibrations from the tympanic membrane to the inner ear (correct)

    • Which structure connects the middle ear to the throat?

    <p>Eustachian tube</p> Signup and view all the answers

    What part of the human ear contains the semi-circular canals and cochlea?

    <p>Inner ear</p> Signup and view all the answers

    What is the fluid called that fills the bony labyrinth in the inner ear?

    <p>Perilymph</p> Signup and view all the answers

    What part of the human ear traps sound waves and causes vibrations in the tympanic membrane?

    <p>Pinna</p> Signup and view all the answers

    What is the role of the organ of Corti in the human ear?

    <p>Converting sound into nerve impulses</p> Signup and view all the answers

    Which part of the ear is responsible for maintaining balance by detecting changes in body speed and direction?

    <p>Semi-circular canals</p> Signup and view all the answers

    What causes middle ear infections?

    <p>Fluid buildup and inflammation</p> Signup and view all the answers

    How are pressure waves generated in the cochlea?

    <p>Through the oval window</p> Signup and view all the answers

    Which part of the ear converts sound vibrations into electrical impulses for transmission to the auditory nerve?

    <p>Cochlear implants</p> Signup and view all the answers

    What is the function of grommets in treating middle ear infections?

    <p>Draining tubes for fluid buildup</p> Signup and view all the answers

    Which part of the ear is responsible for sending impulses to the cerebellum for coordination during balance maintenance?

    <p>Semi-circular canals</p> Signup and view all the answers

    What is a common treatment option for deafness that involves amplifying sound?

    <p>Hearing aids</p> Signup and view all the answers

    What is the function of the ossicles in the middle ear?

    <p>Amplify and transmit vibrations from the tympanic membrane to the inner ear</p> Signup and view all the answers

    Which structure in the outer ear is responsible for directing sound waves into the auditory canal?

    <p>Pinna</p> Signup and view all the answers

    What is the function of the semi-circular canals in the inner ear?

    <p>Detect changes in body speed and direction</p> Signup and view all the answers

    What connects the middle ear to the throat in humans?

    <p>Eustachian tube</p> Signup and view all the answers

    What part of the human ear is made of cartilage flaps and helps in directing sound waves into the auditory canal?

    <p>Pinna</p> Signup and view all the answers

    Which part of the ear contains little hairs and wax to prevent foreign bodies from entering and to keep the tympanic membrane from drying out?

    <p>Auditory canal</p> Signup and view all the answers

    What is the role of the ossicles in the human ear?

    <p>Amplifying vibrations and transmitting them to the oval window</p> Signup and view all the answers

    How are balance changes detected in the human body?

    <p>Through the semi-circular canals and maculae in the sacculus and utriculus</p> Signup and view all the answers

    What is the function of the organ of Corti in the human ear?

    <p>Converting sound into nerve impulses</p> Signup and view all the answers

    How do cochlear implants help individuals with deafness?

    <p>By converting sound into electrical impulses for direct transmission to the auditory nerve</p> Signup and view all the answers

    What is a common cause of deafness according to the text?

    <p>Hardening of ear tissues like the ossicles</p> Signup and view all the answers

    What is the function of the cristae in the human ear?

    <p>Detecting changes in body speed and direction</p> Signup and view all the answers

    How does a middle ear infection typically affect hearing?

    <p>By leading to fluid buildup and inflammation</p> Signup and view all the answers

    What happens when the oval window moves due to pressure waves?

    <p>Pressure waves are generated in the cochlea's endolymph</p> Signup and view all the answers

    Which part of the ear is responsible for coordinating muscle activity to maintain balance?

    <p>Cristae in semi-circular canals</p> Signup and view all the answers

    How does medication typically help treat middle ear infections?

    <p>By reducing fluid buildup and inflammation</p> Signup and view all the answers

    What is the function of the oval and round windows in the human ear?

    <p>To transmit sound waves to the cochlea</p> Signup and view all the answers

    How does the Eustachian tube contribute to the functioning of the human ear?

    <p>By transmitting sound waves to the cochlea</p> Signup and view all the answers

    What is the main role of the semi-circular canals in the inner ear?

    <p>To equalize pressure on both sides of the tympanic membrane</p> Signup and view all the answers

    What is the structure responsible for coordinating muscle activity during balance maintenance in humans?

    <p>Semi-circular canals</p> Signup and view all the answers

    How does the cochlea contribute to the process of hearing in humans?

    <p>By amplifying vibrations from the tympanic membrane to the inner ear</p> Signup and view all the answers

    What is contained within the bony labyrinth of the inner ear?

    <p>Perilymph</p> Signup and view all the answers

    Which structure in the outer ear prevents foreign bodies from entering and helps keep the tympanic membrane moist?

    <p>Hammer (malleus)</p> Signup and view all the answers

    What is a key function of the cartilage flaps in the outer ear?

    <p>Directing sound waves into the auditory canal</p> Signup and view all the answers

    How does the auditory canal contribute to hearing in humans?

    <p>By detecting changes in body speed and direction</p> Signup and view all the answers

    What is the role of the cristae in the human ear?

    <p>Detect changes in body speed and direction</p> Signup and view all the answers

    How do cochlear implants help individuals with deafness?

    <p>Convert sound vibrations into electrical impulses</p> Signup and view all the answers

    What is the function of maculae in the human ear?

    <p>Detect changes in the head's position relative to gravity</p> Signup and view all the answers

    How does the organ of Corti contribute to hearing?

    <p>Convert sound into nerve impulses</p> Signup and view all the answers

    What is a possible cause of hardening of ear tissues in deaf individuals?

    <p>Injury to the ear</p> Signup and view all the answers

    What is the purpose of grommets in treating middle ear infections?

    <p>Drain fluid from the middle ear</p> Signup and view all the answers

    In what part of the human ear do you find the semi-circular canals?

    <p>Inner Ear</p> Signup and view all the answers

    How does the oval window generate pressure waves in the cochlea's endolymph?

    <p>By receiving vibrations from the ossicles.</p> Signup and view all the answers

    What happens when sensory hair cells in the organ of Corti are stimulated?

    <p>Sound is converted into nerve impulses.</p> Signup and view all the answers

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