10 Questions
Which cranial nerve is responsible for the afferent limb of the accommodation reflex?
Cranial nerve II
What are the three responses involved in the accommodation reflex?
Pupil constriction, lens accommodation, and convergence
What is the role of the ciliary muscles in the accommodation reflex?
Controlling the shape of the lens
What changes in the eye occur during the accommodation reflex?
Changes in pupil size and lens shape
What is the accommodation reflex dependent on?
Parasympathetic nervous system
Match the following parts of the accommodation reflex with their descriptions:
Cranial nerve II = Afferent limb of reflex Cranial nerve III = Efferent limb of reflex Ciliary muscles = Control the change in the shape of the lens Parasympathetic nervous system = Controls the reflex
Match the following responses involved in the accommodation reflex with their definitions:
Pupil constriction = Narrowing of the pupil Lens accommodation = Change in the shape of the lens Convergence = Turning of the eyes inward to focus on a near object
Match the following terms related to the accommodation reflex with their definitions:
Accommodation = Process by which the eye changes optical power to maintain a clear image Reflex = Automatic response to a stimulus Vergence = Movement of the eyes in opposite directions to obtain or maintain single binocular vision
Match the following components involved in the accommodation reflex with their roles:
Superior centers = Interneuron Ciliary muscles = Alter the focal distance of the eye Cranial nerve III = Efferent limb of reflex
Match the following elements related to the accommodation reflex with their descriptions:
Near object = Subtends a large area in the visual field Afferent limb of reflex = Dependent on cranial nerve II Efferent limb of reflex = Dependent on cranial nerve III
Test your knowledge of the accommodation reflex and its components with this informative quiz. Explore the role of cranial nerves and superior centers in coordinating changes in vergence, lens shape, and pupil size.
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