Visual system

Question 1

Accomidation

Answer 1

Process by which the eye changes optical power to maintain a clear image/focus on an object as distance changes. E-w Nuc

Question 2

Pupillary light Reflex

Answer 2

Constriction of pupils in response to light. Direct and consensual. E-W nuc

Question 3

Convergence

Answer 3

Simultaneous inward movement of both eyes in effort to maintain single binocular vision when viewing and object. Rostral colliculus

Question 4

Orienting eyes

Answer 4

Head and eye orientation to visual and aud stim. Rostral colliculus

Question 5

Blink reflex

Answer 5

Involuntary blinking by stimulation of cornea. Brachium of Rostral Coll> Pretectum> Tectum> VII nuc…

Question 6

Vestibulu-ocular Reflex

Answer 6

Vest system detects angular movements and initiates compensatory eye movements.

Question 7

Horizontal gaze

Answer 7

Paramedian pontine reticular formation (PPRF)

Question 8

Vertical gaze

Answer 8

Rostral interstitial nucleus of MLF, Interstitial nuc of Cajal, Nuc of Darkschewitsch, Nuc of caudal commissure

Question 9

Pursuit

Answer 9

Use of vis input to track a moving target