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PNS quiz 1 > CN 1 > Flashcards

CN 1 Flashcards

1
Q

What kind of cells are primary sensory neurons?

A

Bipolar

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2
Q

Where is the olfactory nerve found?

A

Olfactory epithelium lining superior part of the nasal cavity

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3
Q

What covers the olfactory epithelium?

A

Mucus membrane

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4
Q

What are olfactory neurons supported by?

A

Supporting cells

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5
Q

What function as receptors?

A

Hairs

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6
Q

How many nerves are conveyed information into the olfactory bulbs?

A

10-20

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7
Q

Are olfactory neurons myelinated?

A

No

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8
Q

What are olfactory neurons covered by?

A

Schwann cells

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9
Q

Pathway of olfactory neurons

A

Olfactory bulb-> synapse on dendrites of mitral cells

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10
Q

What are formed at the synapses?

A

Synaptic glomeruli

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11
Q

___ are the secondary sensory neurons

A

Mitral cells

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12
Q

Where are cell bodies located?

A

Olfactory bulb

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13
Q

The olfactory bulb is also the ___

A

Nucleus of termination

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14
Q

Mitral cells relay information posterior via the ___

A

Olfactory tract

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15
Q

Where do the tract fibers split?

A

Anterior perforated substance

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16
Q

What do the fibers split into?

A

Medial and lateral olfactory striae

17
Q

Medial striae fibers cross the midline via the ___

A

Anterior commissure

18
Q

Where do the medial striae fibers cross to?

A

The opposite olfactory bulb

19
Q

Do we segregate smell?

A

No

20
Q

Lateral striae fibers carry information to the ___

A

Primary olfactory cortex

21
Q

Where do lateral striae fibers land in the primary olfactory cortex?

A

Peramygdaloid and prepirifoxrm area, including the uncus (BA 34)

22
Q

Lateral striae fibers land where in the secondary olfactory cortex?

A

Entorhinal area, parahippacampal gyrus (BA 28)

23
Q

Receptor-> cortex takes how many neurons?

A

2

24
Q

What is the structure that doesn’t have a synapse?

A

Thalamus

25
Q

Terminal nerve pathway

A

From nasal septum- autonomic

26
Q

What is the nerve that is poorly developed in humans?

A

Vomeronasal nerve

27
Q

What nerve is important in tracking prey?

A

Vomeronasal nerve

28
Q

What is the term for loss of smell?

A

Anosmia

PNS quiz 1 (2 decks)

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