Homework 3

3. The Sense of Hearing Sound Production - Labeling Activity 1 The figure below events are numbered A-G in the order they happen. Read the descriptions of the events bellow and place the correct letter in the blank before its description. represents the chain of events that result in the perception of sound. These A) B A. Oval window movement sets up fluid wave inside the cochlea that stimulates the hair cells of the organ of Corti. B. Temporal lobe interprets nerve impulses as sound or balance. C. Sound waves enter external auditory canal. D. Sound waves cause tympanic membrane to vibrate. E. Vestibulocochlear nerve carries impulses to temporal lobe of brain. F. Tympanic membrane causes auditory ossicles to move. G. Movement of stapes causes oval window to move in and out. 356 Special Senses: Hearing and Equilibrium | Laboratory 17 © bluedoor, LLC

Localizing sound travelling in the vertical plane involves 1. using one ear and the reflection of sound off of outer ear structures 2.  using interaural time delays when the sound frequency is high 3. None of them 4. using sound shadows reflecting the differences in intensity when the sound frequency is low  5. All of them

I need to differentiate the functions of parts of the ear. The vestibular apparatus, which has fluid and hairs in it--head position ex. car sickness, while reading in moving car; semicircular canals, which have hairs in it--balance and equilibrium ex. dizziness when riding a merry-go-round; and cochlea, which have cilia--hearing ex. hearing loss going to a concert.

Place the steps of auditory transduction in order v Choose. Mechanically gated sodium channels open Hair cells of the vestibular membrane are triggered Hair cells on the organ of corti are triggered The auricle catches sound waves and passes them deeper into the ear Influx of sodium causes graded potentials Voltage gated sodium channels open Choose...

How do we localize where sound is coming from and which structures are responsible?  Select all that apply: a. The auditory nerve communicates with the vestibular nuclei to process information about the body's location b. Medial geniculate nucleus processes visual stimuli to locate visual cues associated with the sound c. The hair cells simultaneously process information about frequency as well as the location the sound originated in d. Lateral superior olives respond to differences in the amplitude of sound waves from each ear e. Medial superior olives respond to differences in the time it takes sound to arrive in each ear

Review & Practi Now available in MasteringA&P Ex Physiology of the Ear Name Date Section A. Matching Match each description listed on the left with its correct structure on the right. 1. maculac A. loss of balance 2. cristae B. site of auditory receptors C. vibrates oval window D. trar.smits sound wave to auditory ossicles E. receptors for static equilibrium F. dissipates sound energy G. receptors for dynamic equilibrium H. loss of nerve function I. damage to tympanic membrane 3. frequency of sound 4. nerve deafness 5. conduction deafness 6. cochlca 7. stapes 8. round window 9. tympanic membrane 10. nystagmus J. eye movements during rotation 11. amplitude K. volume of a sound 12. vertigo L. pitch of a sound B. Short-Answer Questions 1. Describe the process of hearing. 2. Explain how sound waves striking the tympanic membrane result in movement of fluids in the inner ear. 3. Describe the receptors for dynamic and static equilibrium. 4. What is the range of sound frequencies that humans…

1. Give the receptor for the auditory pathway. 2. Give the termination of the auditory pathway 3. Give the types of deafness. 4. Give the tests to distinguish conduction deafness from sensorineural deafness.

11. What part of the inner ear is involved in conducting signals of static equilibrium?     THIS IS NOT AND WILL NOT BE GRADED

The fire alarm siren produces a high pitch sound A.Explain the steps involved in transferring, and perceiving the siren sound waves in the cochlea of the ear (mention all relevant steps involved in the hearing of a high pitch sound in the cochlea).  B.If the cochlea basilar membrane vibrations are inhibited (decreased), how will it affect hearing, and why? (Mention the effects on the relevant events in the cochlea involved in hearing).

Label these illustrations by choosing the letter of the correct label from the given set of choices

1. Scenario: Raul went to the doctor 2 weeks ago. He has been experiencing a severe buzzing in his right ear. Overtime, he feels as if he cannot hear in that ear. It is so bad that some days he feels as if he is deaf. From the extract above answer the following questions: a. Explain what is happening to Raul and what is a possible reason for that occurrence b. Explain the process of hearing and what effect does the point mentioned in A has on this process c. What treatment plan would the doctor recommend for Raul

Match the terms in column A with the descriptions in column B.   Column B1. muscle attached to stapes2. muscle attached to malleus3. auditory ossicle attached to tympanic membrane4. air-filled space containing auditory ossicles5. contacts hairs of hearing receptors6. leads from oval window to apex of cochlea7. S-shaped tube leading to tympanic membrane8. wax-secreting structure9. cone-shaped, semitransparent membrane attached to malleus10. auditory ossicle attached to oval window11. bony chamber between the cochlea and semicircular canals12. contains endolymph13. bony canal of inner ear in temporal bone14. connects middle ear and pharynx15. extends from apex of cochlea to round windowColumn Aa. auditory tubeb. ceruminous glandc. external auditory meatusd. malleuse. membranous labyrinthf. osseous labyrinthg. scala tympanih. scala vestibulii. stapediusj. stapesk. tectorial membranel. tensor tympanim. tympanic cavityn. tympanic membraneo. vestibule