Internal Orbital Features: Lacrimal Gland Flashcards Preview

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Flashcards in Internal Orbital Features: Lacrimal Gland Deck (8):
1

Which cranial nerves are involved in the Visceral Efferent (VE) parasympathetic pathway to the lacrimal gland?

facial and trigeminal (maxillary and ophthalmic divisions/branches)

2

Preganglionic visceral efferent fibers of cranial nerve VII will exit the pons in what nerve?

nervus intermedius, nerve of Wrisberg, sensory root of facial nerve

3

*Parasympathetic stimulation of blood vessels in the lacrimal gland will result in what events?

vasodilation of blood vessels, increased availability of water to secretory units, thinner or more watery product in the lumen;

4

Visceral Efferent (VE) pathways innervate what structures?

smooth muscle, cardiac muscle and glandular tissue

5

***What is the origin for the sympathetic pathway to the lacrimal gland?

lateral horn/intermediolateral cell column T1,T2

6

*What is the target of the preganglionic sympathetic visceral efferent (VE) fiber in the pathway to the lacrimal gland?

the VE fiber ascends to superior cervical ganglion to synapse

7

***Sympathetic stimulation of the lacrimal gland will result in what events?

vasoconstriction of blood vessels, limited availability of water to secretory units, more viscous or thicker product formed in glandular lumen

8

Parasympathetic stimulation of targets in the lacrimal gland will result in what events?

vasodilation of blood vessels, increased availability of water to secretory units, thinner or more watery product in lumen;
constriction of myoepithelial cells leading to release of product from secretory lumen into duct system

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