Internal Orbital Features: 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 result 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 result in what events?

Answer 8

Vasodilation of Blood Vessels
Increased Availabiltiy 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.