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1 Anatomy > XV. Cranial Nerves > Flashcards

XV. Cranial Nerves Flashcards

1
Q

What are the 6 different modalities of cranial nerves?

A 
General somatic efferent
General visceral efferent
Special visceral efferent
General somatic afferent
General visceral afferent
Sensory afferent
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2
Q

Ganglion of CNIII

A

Ciliary ganglion (autonomic)

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3
Q

Ganglion of CNV

A

Trigeminal ganglion (sensory)

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4
Q

Ganglions (x3) of CNVII

A 
Geniculate ganglion (sensory)
Pterygopalatine ganglion (autonomic)
Submandibular ganglion (autonomic)
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5
Q

Ganglions (x2) of CNVIII

A 
Spiral ganglion (sensory)
Vestibular ganglion (sensory)
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6
Q

Ganglions (x3) of CNIX

A 
Superior ganglion (sensory)
Inferior (petrosal) ganglion (sensory)
Otic ganglion (autonomic)
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7
Q

Ganglions (x3) of CNX

A

Superior (jugular) ganglion (sensory)
Inferior (nodose) ganglion (sensory)
Prevertebral/intramural ganglia (autonomic)

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8
Q

Describe sensory afferent of primary/secondary neurons of CN I

A

Primary neurons in olfactory epithelium sends 20 bundles of axon (olfactory nerve proper) across cribiform plate to synapse with secondary neurons (mitral/tufted cells) within olfactory bulbs

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9
Q

What are the 2 cell types in the olfactory bulb?

A

Mitral (lateral olfactory area)

Tufted (anterior olfactory nucleus, lateral, intermediate and medial olfactory areas)

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10
Q

Secondary neuron axons of CNI are sent to which 3 area?

A
  1. Primary (lateral) olfactory area (Uncus, entorhinal/ant hippocampal gyrus, limen insula, part of amygdala)
  2. Anterior perforated substance (intermediate olf area)
  3. Medial olfactory area (septal area) in subcallosal region of medial frontal lobe - emotional response with limbic connections
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11
Q

What connects all 3 olfactory areas

A

Diagonal band of Broca

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12
Q

What is the pyriform cortex

A

Pear-shaped are containing uncus, entorhinal, limen insula of primary olfactory area

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13
Q

Efferent fibers of CN I from medial forebrain bundle all travel to where?

A

Lateral olfactory area to Hypothalamus

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14
Q

Efferent fibers from olfactory area travel in stria medullaris thalami to where?

A

Septal area to Habenular nucleus

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15
Q

Efferent fibers from olfactory area travel in stria terminalis from amygdala to where?

A

anterior hypothalamus and preoptic area

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16
Q

The hypothalamus sends olfactory information to where?

A

Through dorsal longitudinal fasciculus
Reticular formation
Salivatory nuclei
Dorsal motor nucleus of X (nausea/peristalsis, gastric secretion)

17
Q

Anterior olfactory nucleus output to where?

A

Anterior commissure to contralateral olfactory bulb

Ipsilateral olfactory cortical areas

1 Anatomy (7 decks)

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