Sympathetic Visceral Efferent Pathway Flashcards Preview

Spinal Anatomy I - Exam 3 > Sympathetic Visceral Efferent Pathway > Flashcards

Flashcards in Sympathetic Visceral Efferent Pathway Deck (5)
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1
Q

The sympathetic VE pathway to the dilator pupillae will involve what neural components?

A

spinal nerves and a neurovascular plexus around blood vessels

2
Q

What is the origin for the sympathetic pathway to the dilator pupillae?

A

lateral horn/intermediolateral cell column T1, T2

3
Q

What is the target of the preganglionic sympathetic VE fiber in the pathway to the dilator pupillae?

A

the VE fiber ascends to the superior cervical ganglion to synapse

4
Q

What is the pathway for the postganglionic sympathetic VE fiber to the dilator pupillae?

A

it joins the internal carotid artery neurovascular plexus and continues along the ophthalmic artery to the central artery of the retina when it enters the eyeball

5
Q

List, in order, the features in the sympathetic pathway to the dilator pupillae.

A
  • lateral horn/intermediolateral cell column T1, T2
  • first order sympathetic motor neuron
  • preganglionic sympathetic motor fiber
  • superior cervical ganglion
  • synapse
  • second order sympathetic motor neuron
  • postganglionic sympathetic motor fiber
  • neurovascular plexus around internal carotid artery
  • continues along ophthalmic artery
  • continues along central artery of the retina
  • synapse
  • dilator pupillae

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