QuestionSBA
QuestionChoice
This is incorrect. The ciliary ganglion innervates the muscles that constrict the pupil and control the shape of the lens in the eye. The vergence centre sends signals to the Edinger-Westphal nucleus during convergence of the eyes.
10004280
e
Signals are sent to the ciliary ganglion via sympathetic fibres of the oculomotor nerve
QuestionChoice
This is incorrect. The pretectal nucleus receives afferents from both the retina and optic tectum. The pretectal nucleus is involved in controlling the motor responses to changing visual inputs.
10004279
d
Signals are sent to the pretectal nucleus
QuestionChoice
This is incorrect. The ciliary ganglion innervates the muscles that constrict the pupil and control the shape of the lens in the eye. The vergence centre sends signals to the Edinger-Westphal nucleus during the convergence of the eyes.
10004278
c
Signals are sent to the ciliary ganglion via parasympathetic fibres of the optic nerve
QuestionChoice
This is incorrect. The abducens nucleus is involved in coordinating the conjugate gaze, not in the dis conjugate gaze pathway. The abducens nucleus is the originating nucleus from where the abducens nerve emerges.
10004277
b
Signals are sent to the abducens nucleus
QuestionChoice
This is correct. The Edinger-Westphal nucleus supplies preganglionic parasympathetic fibres to the eye. It plays a role in constricting the pupil, the convergence of the eyes and accommodation.
10004276
a
Signals are sent to the Edinger-Westphal nucleus
Concept
Chapter
2693
4258
Eye
Topic
141
Neurology
13402
The pathway of dis conjugate eye movements involves the vergence centre sending out signals.

During convergence of the eyes, which of the following signals are sent out by the vergence centre?
a