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Head - 4 > parasympathetic innervation: Pterygopalatine, Submandibular, Otic Ganglion, clinical > Flashcards

parasympathetic innervation: Pterygopalatine, Submandibular, Otic Ganglion, clinical Flashcards

1
Q

what is the pterygopalatine ganglion also known as?

A

sphenopalatine

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2
Q

significance of pterygopalatine ganglion?

A

largest of the four parasympathetic ganglia

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3
Q

where is the pterygopalatine ganglion located?

A

located within the pterygopalatine fossa

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4
Q

what is the pterygopalatine fossa?

A

a space located inferiorly to the base of the skull, and posteriorly to the maxilla

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5
Q

Pre-ganglionic fibres of the pterygopalatine ganglion?

A

The pterygopalatine ganglion is supplied by fibres from the superior salivatory nucleus

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6
Q

what is superior salivatory nucleus associated with?

pre-ganglion of pterygopalatine

A

associated with the facial nerve

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7
Q

where do fibres fro the superior salivatory nucleus travel within? to reach?
(pre-ganglion of pterygopalatine)

A

the greater petrosal nerve and the nerve of the pterygoid canal to reach the ganglion

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8
Q

where do post-ganglionic fibres of the pterygopalatine ganglion leave the ganglion?

A

by hitch-hiking on branches of the maxillary nerve (derived from the trigeminal nerve)

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9
Q

post-ganglionic fibres from pterygopalatine ganglion provides what?

A

secretomotor innervation to lacrimal gland, mucous glands of posterosuperior nasal cavity, nasopharynx, and the palate

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10
Q

what passes through the pterygopalatine ganglion without synapsing?

A

Sympathetic fibres from the internal carotid plexus and sensory branches from the maxillary nerve

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11
Q

where is the submandibular ganglion located?

A

inferiorly to the lingual nerve, from which it is suspended

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12
Q

what are pre-ganglionic fibres of the submandibular ganglion supplied by?

A

by fibres from the superior salivatory nucleus (associated with the facial nerve)

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13
Q

what are the fibres from the superior salivatory nucleus carried within? (submandibular ganglion)

A

within a branch of the facial nerve, the chorda tympani

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14
Q

how does the chorda tympani reach the submandibular ganglion?

A

This nerve hitch-hikes along the lingual branch of the mandibular nerve to reach the ganglion

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15
Q

where do the post-ganglionic fibres leave the submandibular ganglion to travel to?

A

Post-ganglionic fibres leave the ganglion and travel directly to the submandibular and sublingual glands

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16
Q

target organs of submandibular ganglion?

A

Secretomotor innervation to the submandibular and sublingual salivary glands

17
Q

what else passes through the submandibular ganglion aside from pre,post ganglion?

A

Sympathetic fibres from the facial artery plexus pass through the submandibular ganglion

18
Q

what do sympathetic fibres from the facial artery plexus innervate? (pass through submandibular ganglion)

A

innervate glands in the base of the oral cavity

19
Q

where is the otic ganglion located?

A

inferiorly to the foramen ovale, within the infratemporal fossa

20
Q

what is the otic ganglion medial to?

A

the mandibular branch of the trigeminal nerve

21
Q

pre-ganglionic fibres of the otic ganglion?

A

The ganglion is supplied by fibres from inferior salivatory nucleus (associated with the glossopharyngeal nerve)

22
Q

where do parasympathetic fibres of the otic ganglion travel within? reaching?

A

within a branch of the glossopharyngeal nerve, the lesser petrosal nerve, to reach the otic ganglion

23
Q

post-ganglionic parasympathetic fibres of the otic ganglion travels long?

A

The parasympathetic fibres hitchhike along the auriculotemporal nerve

24
Q

what do parasympathetic fibres (post) of otic ganglion provide innervation to?

A

provide secretomotor innervation to the parotid gland

25
Q

what is the auriculotemporal nerve a branch of?

post-ganglion, otic ganglion

A

branch of the mandibular division of the trigeminal nerve

26
Q

what does the ciliary ganglion provide innervation to? function?

A

sphincter pupillae muscle - which acts to constrict pupils

27
Q

what happens if the ciliary ganglion is damaged?

A

loss of innervation to sphincter pupillae

28
Q

what does damage to ciliary ganglion result in? known as?

A

permanently dilated pupils that do not constrict in the presence of light
Adie’s pupils

Head - 4 (111 decks)

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