Need help with Laboratory exercise 37: Ear and Hearing, found on Pg.403. Assessm

Question

Need help with Laboratory exercise 37: Ear and Hearing, found on Pg.403. Assessment C. PART B: Assessments Number the following structures (1-9) to indicate thoir respective positions in relation to vibrations. Assign number 1 to the most superficial portion of the outer ear Auncle (ar vibrations within) External acoustic meatus (air vibrations within) _ Basilar membrane of spiral organ within cochlea -Hair cells of spiral organ the pathiway of the sound Incurs _ Mallets -Oval window Stapes Tympanic membrane PART C: Assessments Match the terms in column A with the descriptions in column B. Place the letter of your choice in the space provided. Column A Column B a. Bony labyrinth h. Cochlear duct c. External acoustic meatus d. Malleus e. Membranous labyrinth f. Pharyngotympanic (auditory) g Scala tympani h. Scala vestibuli i.Stapes j. Tectorial membrane k. Tympanic cavity I. Tympanic membrane (eardrum) 1. Auditory ossicle attached to tympanic membrane 2. Air-filled space containing auditory ossicles within middle ear 3. Contacts hairs of hearing receptors 4. Leads from oval window to apex of cochlea and comtains perilymph 5. S-shaped tube leading to tympanic membrane tube 6. Tube within cochlea containing spiral organ and endolymph 7. Cone-shaped, semitransparent membrane attached to malleus 8. Auditory ossicle attached to oval windoa 9. Chambers containing endolymph within bony labyrinth 10. Bony chambers of inner ear in temporal bone -11. Connects middle ear and pharynx -12. Extends from apex of cochlea lo round window and contains perilymph

Explanation / Answer

PART B:

Pathway of sound vibrations

1. Auricle

2. External acoustic meatus

3. Tympanic membrane

4. Malleus

5. Incus

6. Stapes

7. Oval window

8. Basilar membrane of spiral organ within cochlea

9. Hair cells of spiral organ.

PART C:

1. (d)

2. (k)

3. (b)

4. (h)

5. (c)

6. (e)

7. (l)

8. (i)

9. (j)

10.(a)

11. (f)

12. (g)

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