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Clinical Human Anatomy: Head & Neck > Cranial Nerve Locations (ganglia, route, autonomic fibers, etc.) > Flashcards

Cranial Nerve Locations (ganglia, route, autonomic fibers, etc.) Flashcards

1
Q

Location of neuron cell bodies:

Motor neurons of CN VII

A

Pons - Motor nucleus of VII

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1
Q

Cranial Nerves with Autonomic function

Location of postganglionic neuron cell bodies:

CN III

A

Ciliary ganglion (attached to V1)

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2
Q

Cranial Nerves with Autonomic function

Location of postganglionic neuron cell bodies:

CN VII to salivary glands (except parotid gland)

A

Submandibular ganglion (attached to V3)

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2
Q

What is the route of the preganglionic fibers of CN X?

A

With CN X.

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3
Q

Location of neuron cell bodies:

Motor neurons of CN IX

A

Medulla - nucleus ambiguus

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3
Q

Location of neuron cell bodies:

Somatic sensory neurons of CN X

A

Superior ganglion of X

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3
Q

Target organ of autonomic fibers from CN IX?

A

Parotid gland –> salivation

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4
Q

Location of neuron cell bodies:

CN IV

A

Lower midbrain - trochlear nucleus

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4
Q

Which cranial nerve passes between posterior cerebral and superior cerebellar arteries?

HINT: aneurysms of these arteries injures this nerve

A

CN III

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5
Q

Target organ of autonomic fibers from CN III?

A

Sphincter pupillae m. –> Pupil constriction

Ciliary m. –> lens accommodation for near vision

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6
Q

Location of neuron cell bodies:

Motor neurons of CN X

A

Medulla - nucleus ambiguus

(some are “cranial roots” previously associated with CN XI)

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7
Q

What is the route of the postganglionic fibers of CN VII to lacrimal gland?

A

Via zygomaticotemporal n. (V2) and lacrimal n. (V1)

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8
Q

Cranial Nerves with Autonomic function

Location of preganglionic neuron cell bodies:

CN III

A

Upper midbrain - Edinger-Westphal nucleus

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8
Q

What is the route of the preganglionic fibers of CN III?

A

They travel with CN III.

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10
Q

Location of neuron cell bodies:

CN XII

A

Medulla - hypoglossal nucleus

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12
Q

Location of neuron cell bodies:

CN XI

A

Spinal cord - anterior horn of cervical region

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14
Q

Location of neuron cell bodies:

Sensory neurons of CN VII

A

Geniculate ganglion

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15
Q

Location of neuron cell bodies:

CN VI

A

Pons - abducent nucleus

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16
Q

Location of neuron cell bodies:

Sensory neurons of Trigeminal Nerve

A

Trigeminal (semilunar) ganglion

16
Q

Cranial Nerves with Autonomic function

Location of preganglionic neuron cell bodies:

CN X

A

Medulla - Dorsal motor nucleus of X

17
Q

Location of neuron cell bodies:

CN I

A

Olfactory epithelium

19
Q

Cranial Nerves with Autonomic function

Location of preganglionic neuron cell bodies:

CN VII to lacrimal gland

A

Pons - superior salivatory nucleus

19
Q

What is the route of the postganglionic fibers of CN III?

A

Travel with short ciliary nerves

20
Q

Cranial Nerves with Autonomic function

Location of postganglionic neuron cell bodies:

CN X

A

Autonomic ganglia near or within walls of target organ (e.g. esophagus)

22
Q

Location of neuron cell bodies:

CN III

A

Upper midbrain - oculomotor nucleus

23
Q

Cranial Nerves with Autonomic function

Location of postganglionic neuron cell bodies:

CN VII to lacrimal gland

A

Pterygopalatine ganglion (attached to V2)

24
Q

Which cranial nerve takes the following route?

  • emerges near mediane plane at junction of pons & medulla
  • passes through cavernous sinus & superior orbital fissure
  • passes within the common tendinous ring from which rectus m.’s originate
A

CN VI - abducent

…and I suppose CN III does, too

25
Q

What is the route of the postganglionic fibers of CN IX?

A

Via auriculotemporal nerve

27
Q

Location of neuron cell bodies:

CN II

A

Retina

28
Q

Cranial Nerves with Autonomic function

Location of preganglionic neuron cell bodies:

CN VII to salivary glands (except parotid gland)

A

Pons - superior salivatory nucleus

29
Q

Which cranial nerve takes the following route?

  • emerges from dorsal aspect of midbrain (only CN to emerge dorsally!)
  • passes through cavernous sinus & superior orbital fissure
  • passes outside the cocmmon tendinous ring from which rectus m.’s orginate
A

CN IV

31
Q

Target organ of autonomic fibers from CN VII?

A

Lacrimal gland & mucosa of nasal cavity, nasopharynx, & palate –> lacrimation

Submandibular and sublingual salivary glands –> salivation

32
Q

Location of neuron cell bodies:

Motor neurons of Trigeminal Nerve

A

Pons - motor nucleus of V

33
Q

Location of neuron cell bodies:

CN VIII

A

Spiral ganglion (cochlea)

Vestibular ganglion

34
Q

What is the route of the preganglionic fibers of CN IX?

A
  • Exit brain w/ CN IX fibers
  • Pass through tympanic n. and lesser petrosal n.
35
Q

Which cranial nerve takes the following route?

  • emerges from sides of medulla anterior to olives
  • passes through hypoglossal canal and curves forward near angle of mandible superior to ansa cervicalis to enter tongue
A

CN XII

36
Q

Location of neuron cell bodies:

Visceral and special sensory neurons of CN X

A

Inferior ganglion of X

37
Q

What is the route of the preganglionic fibers of CN VII to the lacrimal gland?

A
  • Through nervous intermedius & geniculate ganglion
  • Via greater petrosal n. to nerve of pterygoid canal
39
Q

True or false?

No part of CN XI arise from the medulla.

A

True. The spinal root represents CN XI in its entirety.

40
Q

Which cranial nerve takes the following route?

  • emerges near median plane at junction of midbrain & pons
  • passes between posterior cerebral and superior cerebellar a.’s
  • passthrough cavernous sinus & superior orbital fissure
  • passes within the common tendinous ring from which rectus m.’s originate
A

CN III

41
Q

Target organ of autonomic fibers from CN X?

A

Smooth muscle & glands of gastrointestinal tract, pulmonary & cardiovascular systems –> (varies)

42
Q

Cranial Nerves with Autonomic function

Location of preganglionic neuron cell bodies:

CN IX

A

Medulla - inferior salivatory nucleus

43
Q

What is the route of the preganglionic fibers of CN VII to salivary glands?

A
  • Through nervous intermedius (VII) & geniculate ganglion (VII)
  • Via chorda tympani (VII), it joins lingual n. (V3)
44
Q

Cranial Nerves with Autonomic function

Location of postganglionic neuron cell bodies:

CN IX

A

Otic ganglion (attached to V3)

45
Q

Location of neuron cell bodies:

Sensory neurons of CN IX

A

Superior ganglion of IX

Clinical Human Anatomy: Head & Neck (6 decks)

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