Taste and Olfaction

Question 1

Characteristics of the olfactory neurons (cite 3)

Answer 1

1. Uses type C nerve fibers
2. Does not send fibers to the thalamus
3. Capable of reproduction

Question 2

This nerve detects noxious or painful stimuli

Answer 2

CN V (Trigeminal)

CN I (olfactory) detects scent

Question 3

____ are the neurons in the olfactory epithelium that project to mitral cells and from there directly to the olfactory cortex

Answer 3

Odorant receptors

Question 4

The Golf are used as transducer to activate the ____ second messenger system which open the Na channel causing depolarization.

Answer 4

cAMP

Question 5

The anterior 2/3 of the tongue is innervated by ____

Answer 5

CN VII (chorda tympani of the facial nerve)

Posterior 1/3 - CN IX
throat and epiglottis - CN X

Question 6

Taste receptors are ___ (true, not true) neurons

Answer 6

not true neurons

It is a chemoreceptor innervated by afferents of CN VII, IX, X

Question 7

Dysguesia following tooth extraction is due to damage to the ____

Answer 7

gustatory afferent nerves

Question 8

Olfactory nerve uses ___ type of nerve fibers

Answer 8

type C

Question 9

Olfactory fibers do not send fibers to this part of the brain

Answer 9

thalamus

Question 10

The innervation of the olfactory nerve

Answer 10

CN I

and CN V

Question 11

olfactory epithelium that detects scent is innervated by what cranial nerve

Answer 11

CN I

Question 12

the olfactory epithelium that detects noxios stimuli is innervated by what cranial nerve

Answer 12

CN V

Question 13

___ receptors are located in the olfactory epithelium that project to mitral cell then directly to the olfactory complex

Answer 13

odorant receptor

Question 14

olfactory memories are found in which part of the brain

Answer 14

entorhinal cortex

Question 15

___ fracture damages CN I but not CN V

Answer 15

cribiform plate fracture

Question 16

the second messenger of Golfactory is ___

Answer 16

cAMP

Question 17

odorant molecules bind to this olfactory receptors

Answer 17

Golf

Question 18

___ receptors are not true neurons

Answer 18

taste receptors

Question 19

Taste receptor are innervated by the afferents of ___

Answer 19

CN VII
CN IX
CN X

Question 20

The chorda tympani is a part of what cranial nerve

Answer 20

CN VII

Question 21

this innervates the anterior 2/3 of the tongue

Answer 21

chorda tympani

Question 22

the glossopharyngeal nerve innervates the ____ of the tongue

Answer 22

posterior 1/3

Question 23

the throat and epiglottis are innervated by what cranial nerve

Answer 23

CN X (vagus)

Question 24

[taste pathway]

the taste pathway pass through the ___ nucleus of the thalamus prior to ending at the taste cortex

Answer 24

ventral posteromedial nucleus of the thalamus

Question 25

after tooth extraction, a patient develops dysguesia.

this means that there is a damage in ___ nerve

Answer 25

gustatory afferent nerve