Reflexes

Question 1

Accommodation Reflex

Answer 1

This is for near vision

Ciliary muscles contract, zonular fibers slacken, lens become more round to focus on close objects

LENS ADJUSTMENT FOR DIFFERING DISTANCE

Question 2

Light Reflex

Answer 2

Pupillary Constriction: Contraction of sphincter pupillae (parasympathetic; lights out chill out)

Pupillary Dilation: Contraction of dilator pupillae (sympathetic; see more, survivor)

PUPIL ADJUSTMENT FOR LIGHT INTAKE

Question 3

Gag Reflex

Answer 3

Vomit when the pharynx is touched

Question 4

What is the innervation (input/output) of the Gag Reflex?

Answer 4

Input of CN9 sensory, output of CN10 motor (vomiting)

Question 5

What is the innervation of pupillary light reflex?

Answer 5

Sensory in of CN2 (optic), motor output of CN3 (to correct via pupillary muscle)

Done when light intensity varies

Question 6

What is the innervation of accommodation reflex?

Answer 6

Input into CN2 (optics), motor output of CN3 (to adjust lens to focus on differing distanced objects)