Internal Orbital Features: Lacrimal Gland Flashcards Preview

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

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

A

facial and trigeminal (maxillary and ophthalmic divisions/branches)

2
Q

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

A

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

3
Q

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

A

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

4
Q

Visceral Efferent (VE) pathways innervate what structures?

A

smooth muscle, cardiac muscle and glandular tissue

5
Q

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

A

lateral horn/intermediolateral cell column T1,T2

6
Q

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

A

the VE fiber ascends to superior cervical ganglion to synapse

7
Q

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

A

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

8
Q

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

A

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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