The Ear and Hearing

Part A

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.

auditory tube

_ 1.

muscle attached to stapes

b. c.

ceruminous gland external auditory meatus

_ 2.

muscle attached to malleus

d.

malleus

_ 3.

auditory ossicle attached to tympanic membrane

f.

membranous labyrinth osseous labyrinth

_ 4.

air-filled space containing auditory ossicles

g.

scala tympani

_ 5.

contacts hairs of hearing receptors

h. i.

scala vestibuli stapedius

_ 6.

leads from oval window to apex of cochlea

j.

stapes

_ 7.

S-shaped tube leading to tympanic membrane

k. l.

tectorial membrane tensor tympani

_ 8.

wax-secreting structure

m.

tympanic cavity

_ 9.

cone-shaped, semitransparent membrane attached to malleus

n. o.

tympanic membrane vestibule

_ 10.

auditory ossicle attached to oval window

__11. bony chamber between the cochlea and semicircular canals

__11. bony chamber between the cochlea and semicircular canals

__12. contains endolymph

__13. bony canal of inner ear in temporal bone

__14. connects middle ear and pharynx

__15. extends from apex of cochlea to round window

Figure 33.7 Label the structures of this organ of Corti (spiral organ) region of a cochlea (75x micrograph enlarged to 300x).

Figure 33.7 Label the structures of this organ of Corti (spiral organ) region of a cochlea (75x micrograph enlarged to 300x).

Right Cochlea Labeled

Part B

Label the structures indicated in the micrograph of the organ of Corti (spiral organ) in figure 337.

Part C

1. Results of auditory acuity test: Ear Tested Audible Distance (cm)

Right

2. Results of sound localization test:

Actual Location

Reported Location

Front of the head

Front of the head

Behind the head

Above the head

Right side of the head

Left side of the head

3. Results of experiments using tuning forks: Test Left Ear (Normal or Impaired) Right Ear (Normal or Impaired)

Rinne

Weber

4. Summarize the results of the hearing tests you conducted on your laboratory partner.

4. Summarize the results of the hearing tests you conducted on your laboratory partner.

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