Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Neuro 2020 > 12/1/16 Taste Olfactory > Flashcards

12/1/16 Taste Olfactory Flashcards

1
Q

How many neurons on in the taste system?

A

-3 Neuron system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is unique about the olfactory sense?

A

-It bypasses the thalamus and goes straight to the cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

From the tongue what nucleus does taste go to?

A

-Nucleus solitarius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What three nerves do taste on the tongue?

A
  • Facial nerve CN VII
  • Glossopharyngeal nerve CN IX
  • Vagus nerve CN X
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

From the solitary tract where do the taste neurons go to?

A

-VPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

T/F

Taste buds have no efferent neurons, they only have afferents.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the five tastes?

A
  • Umami
  • Sweet
  • Bitter
  • Sour
  • Salty
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the three major taste cell types in the oral cavity?

A
  • Circumvallate
  • Foliate
  • Fungiform
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How many buds do fungiform papilla have?

A

-2-4 buds each

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How many buds to foliate papilla have?

A

2-9 clefts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How many buds to circumvallate have?

A

8-12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What CN innervates the foliate and fungiform papilla?

A

-CN VII Facial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What CN innervates the circumvallate papilla?

A

-CN IX Glossopharyngeal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the ganglia that CN VII uses on the initial neuron?

A

-Geniculate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the ganglia that CN IX uses on the initial neuron?

A

-Petrosal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the ganglia that CN X uses on the initial neuron?

A

-Nodose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Where does taste occur on the solitary nucleus?

A

-Rostral portion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Where does the first synapse occur in taste?

A

-Solitary nucleus

19
Q

Where does the second synapse occur in taste?

A

-VPM

20
Q

From the VPM in the taste sensation where do the neurons go?

A

Gustatory cortex (insula)

21
Q

What does the insula receive?

A
  • Taste

- Olfaction

22
Q

Where do you find the Insula?

A

-The folds on the inside of the temporal lobe on the inside of the Sylvian fissure

23
Q

T/F

Damage to the left insula disrupts addiction to cigarette smoking

A

True

24
Q

Where do you bifurcate with olfaction?

A

-Olfactory Trigone

25
Q

What does the Uncus do?

A

-Helps with memory and olfaction

26
Q

Where is the first synapse in olfaction?

A

-Olfactory bulb

27
Q

T/F

The olfactory neurons allow direct access to brain

A

True

28
Q

Where does the second neuron in olfaction go?

A

–Either the medial or lateral trigone

29
Q

If you go along the lateral trigone tract where do you go?

A

-Cortex

30
Q

T/F

All smells concentrate in a single glomeruli even though the neurons are scattered throughout the nose

A

True

31
Q

From the Olfactory bulb what are the 5 major regions that the 2nd synapse occurs?

A
  • Anterior olfactory nucleus
  • Olfactory tubercle
  • Amygdala
  • Piriform cortex
  • Entorhinal cortex
32
Q

If you synapse with the anterior olfactory nucleus what part of the trigone are you on?

A

-Medial tract

33
Q

What are the two cell bodies in the secondary neurons used in olfaction?

A
  • Mitral cell

- Tufted cell

34
Q

What cells are inhibitory cells found in the olfactory pathway?

A

-Periglomerular cell

35
Q

Where are three places you have highly processed information that takes the place of the thalamus in olfaction?

A
  • Olfactory bulb
  • Olfactory cortex
  • Limbic and motor systems
36
Q

What is Anosmia?

A

-Inability to detect odors

37
Q

What is Hyposmia?

A

-Decreased ability to detect odors

38
Q

What is Dysosmia?

A

-Distorted identification of smell

39
Q

What is Parosmia?

A

-Altered perception of smell in the presence of an odor, usually unpleasant

40
Q

What is Agnosia?

A

-Inability to classify or contrast odors, although able to detect odors

41
Q

What causes Anosmia?

A
  • Early neurodegenerative disorders
  • Damage to olfactory epithelium
  • Facial trauma
  • Tumor
  • Infection
  • Chemical damage
42
Q

How can you test wether CN I or CN V is damaged?

A
  • Use a specific smell to test CN I

- Use capsasin/pepper to test CN V

43
Q

What are two places in the brain the olfactory neurons are continually renewed throughout life?

A
  • Olfactory

- Hippocampus

Neuro 2020 (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions