lacrimal gland

Question 1

what specific pathways are identified with Visceral Efferent (VE) innervation?

Answer 1

sympathetic and parasympathetic motor pathways

Question 2

how many neurons are involved in the Visceral Efferent pathways from CNS to target cell?

Answer 2

two motor neurons

Question 3

what is the location for the second neuron in the VIsceral Efferent (VE) pathway?

Answer 3

typically a ganglion

Question 4

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

Answer 4

facial and trigeminal (maxillary and ophthalmic divisions/branches)

Question 5

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

Answer 5

lateral horn/intermediolateral cell column T1, T2

Question 6

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

Answer 6

the VE fiber ascends to the superior cervical ganglion to synapse

Question 7

sympathetic stimulation of the lacrimal gland will results in what events?

Answer 7

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

Question 8

parasympathetic stimulation of targets in the lacrimal gland will results in what events?

Answer 8

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