Lab 4- Olfaction and Taste, and Hearing and Equilibrium

Question 1

Tongue

Answer 1

• Circumvallate papillae
• Fungiform papillae
• Filiform papillae
• Foliate papillae

Question 2

How many taste buds are on a circumvallate papillae?

Answer 2

100 per papilla

Question 3

How many taste buds are on a fungiform papilla?

Answer 3

5 per papilla

Question 4

What is the function of the filiform papillae?

Answer 4

Texture, friction, light touch.

Question 5

What are the 5 tastes?

Answer 5

• sweet
• sour
• salty
• bitter
• umami

Question 6

What conclusion did you draw from the olfactory adaptation taste?

Answer 6

the more volatile the longer it takes for sensory adaptation.

Question 7

Why can’t you taste with a dry tongue?

Answer 7

Chemoreceptors have to be dissolved in saliva.

for smell they have to be dissolved in mucous

Question 8

which ossicle strikes the oval window?

Answer 8

The Stapes

Question 9

Where does the auditory tube lead?

Answer 9

Nasopharynx

Question 10

Which area contains perilymph?

Answer 10

Bony labyrinth

Question 11

Which are contains endolymph?

Answer 11

Membranous labyrinth

Question 12

What is conductive hearing loss?

Answer 12

outer or middle ear

EX: ear infection

Question 13

What is sensorineural hearing loss?

Answer 13

cochlea all the way to temporal lobe.

EX: cochlear implant

Question 14

What does the Weber test evaluate?

Answer 14

hearing loss

Question 15

Describe how to interpret the weber test.

Answer 15

both ears are equal you’re normal, lateralization towards an ear means you have hearing loss.

Question 16

What does the Rinne test evaluate?

Answer 16

Type of deafness

Question 17

Describe how to interpret the Rinne test.

Answer 17

Hear vibration in-front of ear you’re normal

Question 18

If a weber test sounds louder in left ear, what are the two possible causes?

Answer 18

• conductive deafness

- sensorineural deafness

Question 19

If the Rinne is negative (cannot hear the vibration infront of the ear) on the left ear, and positive (can hear vibration in front of ear) in the right ear, and the above Weber results are true, what is the diagnosis?

Answer 19

Conductive hearing loss in left ear

Question 20

If the above Weber reults are true and the Rinne is positive in left ear and sounds softer in right ear either with tuning fork on the right mastoid, or when held up to the right ear, what is the diagnosis?

Answer 20

Sensorineural hearing loss in right ear

Question 21

Nystagmus

Answer 21

Pupils keep moving back and forth when dizzy

Question 22

What does the Barany’s test evaluate?

Answer 22

semi-circular canal’s; if the fluid (endolymph) is still moving.

Question 23

What does the Romberg test evaluate?

Answer 23

Balance; sense of gravity.