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PNS > Exam 1: olfactory nerve > Flashcards

Exam 1: olfactory nerve Flashcards

1
Q

CN 2

A

Olfactory

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2
Q

Olfactory neurons found in ____ of ____, which is covered by thin layer of mucus

A

Olfactory epithelium

Superior part of nasal cavity

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3
Q

Primary sensory neuron

A

Olfactory neurons

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4
Q

Olfactory neurons are

A

Bipolar

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5
Q

Olfactory neurons are supported by

A

Supporting cells

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6
Q

Olfactory ___ are receptors

A

Hairs

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7
Q

___ olfactory nerves relay to olfactory bulb

A

10-20

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8
Q

Axons of olfactory neurons are unmyelinated, but covered by ___

A

Schwann cells

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9
Q

Olfactory neurons pass through ____ and synapse on ____ in olfactory bulb

A

Cribriform plate/ethmoid

Mitral cells

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10
Q

Olfactory neurons synapse with mitral cells at

A

Synaptic glomeruli

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11
Q

Secondary sensory neurons

A

Mitral cells

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12
Q

Mitral cell located in

A

Olfactory bulb

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13
Q

Mitral cells relay info via

A

Olfactory tract

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14
Q

At the ___, olfactory tract fibers split into medial and lateral olfactory striae

A

Anterior perforated substance

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15
Q

Medial stria cross midline at ____ and travel to opposite olfactory bulb

A

Anterior commissure

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16
Q

Lateral stria carry info to

A

Primary olfactory cortex

17
Q

Primary olfactory cortex composed of

A

Periamygdaloid area
Prepiriform area
Uncus (BM 34)

18
Q

Secondary olfactory cortex composed of

A

Entorhinal area (BM 28)

19
Q

Number of neurons to get form receptor to cortex

A

2

20
Q

Structure not synapsed in

A

Thalamus

21
Q

Terminal nerve

A

Receptors on nasal septum

Autonomic

22
Q

Vomeronasal nerve

A

Important for tracking prey

Poor in humans

23
Q

First sense to deteriorate in Alzheimer’s

A

Olfaction

24
Q

Skull fractures can cause ___ to leak out of the cribriform plate

A

CSF

PNS (24 decks)

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