Autonomic nervous system Flashcards

1
Q

From which spinal nerves do sympathetic fibres originate?

A

Thorocolumbar (thoracic and lumbar)

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2
Q

Where do the preganglionic sympathetic fibres synapse?

A

In or near the CNS

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3
Q

From which spinal nerves do parasympathetic fibres originate?

A

Craniosacral (brain and sacral spinal cord)

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4
Q

Where dot he preganglionic parasympathetic fibres synapse?

A

In or near the wall of the target

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5
Q

Name the parasympathetic ganglions of the head and where they are found

A

Otic ganglion - ITF
Pterygopalatine ganglion - pterygopalatine fossa
submandibular ganglion - floor of the mouth
Cilary ganglion - orbit

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6
Q

Where does the parasympathetic root of parasympathetic ganglion synapse?

A

In the ganglion

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7
Q

Where does the sympathetic root of parasympathetic ganglion synapse, what is its route to the ganglion?

A

In the superior cervical ganglion, wraps around artery and uses parasympathetic ganglion as a path

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8
Q

Where do the sensory routes of parasympathetic ganglion join?

A

Join a trigeminal branch

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9
Q

Where is the otic ganglion?

A

Behind the main trunk of V3 in the ITF

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10
Q

What is the pre-ganglionic parasympathetic root of the otic ganglion?

A

Lesser petrosal nerve (branch of IX)

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11
Q

Where is the post-ganglionic parasympathetic root of otic ganglion heading?

A

Parotid gland

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12
Q

What artery does the post-ganglionic sympathetic root of otic ganglion wrap around?

A

Middle meningeal artery

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13
Q

Where does the sympathetic root of otic ganglion originate?

A

Thoracic or lumbar spinal cord from the sympathetic chain and synapses in superior cervical ganglion

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14
Q

Where is the sympathetic root of otic ganglion heading?

A

Parotid gland

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15
Q

Where does the sensory root of the otic ganglion originate?

A

Parotid gland

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16
Q

How does the sensory root reach the otic ganglion?

A

Via a branch of auriculotemporal nerve

17
Q

How do the branches of distribution (post-ganglionic parasympathetic fibres) reach the parotid gland?

A

Hitchhike along auriculotemporal nerve

18
Q

From which nucleus do parasympathetic fibres for otic ganglion arise?

A

Inferior salivary nucleus (IX)