5 Questions
What is the result of an injury to the dorsal tegmentum in the midbrain?
Disruption of the fibers from the pretectal nucleus to the parasympathetic third nerve nucleus
What is the characteristic of an Argyll Robertson pupil?
It shows a poor direct and consensual response but does constrict with near response
What is the term for the phenomenon of the pupil constricting with near response but not responding to light?
Light-near dissociation
Which nucleus is affected on one side, causing an Argyll Robertson pupil?
Edinger-Westphal nucleus
Where do the fibers pass through that are responsible for the near response in an Argyll Robertson pupil?
Ventral tegmentum
Test your knowledge of the relationship between midbrain lesions and pupillary responses. Learn about the effects of dorsal tegmentum injury on the parasympathetic third nerve nucleus and the Edinger-Westphal nucleus. Understand the characteristics of Argyll Robertson pupil and how it differs from normal pupillary responses.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
