WorksheetsVisual Pathway Quiz
Total questions: 20
Worksheet time: 10mins
Which of the following is the first order neuron in the visual pathway?
Lateral geniculate body
Optic chiasma
Retinal ganglion cells
Photoreceptors
Where do the nasal fibers of the retina decussate?
Optic nerve
Optic chiasma
Lateral geniculate body
Superior colliculus
The lesion at the right optic nerve leads to which visual defect?
Left homonymous hemianopia
Bitemporal hemianopia
Right monocular blindness
Right homonymous hemianopia
Which of the following structures is the primary visual cortex?
Brodmann area 4
Brodmann area 6
Brodmann area 17
Brodmann area 22
The lateral geniculate body is located in which part of the brain?
Midbrain
Pons
Thalamus
Medulla
Which reflex is tested using light shone in one eye and observing pupil constriction in both eyes?
Corneal reflex
Accommodation reflex
Consensual light reflex
Ciliospinal reflex
Which of the following is NOT a component of the accommodation reflex?
Pupil constriction
Lens becoming more convex
Eyeball convergence
Dilation of pupil
Myopia is corrected by using which type of lens?
Convex lens
Concave lens
Cylindrical lens
Plano lens
Hypermetropia is due to what anatomical defect?
Eyeball too long
Cornea too curved
Lens too thick
Eyeball too short
Astigmatism occurs due to which of the following?
Loss of lens elasticity
Irregular curvature of cornea or lens
Shortened eyeball
Weak extraocular muscles
Which photoreceptor is responsible for color vision?
Rods
Cones
Optic disc
Amacrine cells
Which ion is primarily responsible for the depolarization of photoreceptor cells in darkness?
Na⁺
Ca²⁺
K⁺
Cl⁻
During light stimulation, photoreceptor cells undergo what change?
Depolarization
Hyperpolarization
No change
Excitation
Where do most of the optic nerve fibers terminate?
Superior colliculus
Lateral geniculate body
Pretectal nucleus
Visual cortex
Which of the following is the neurotransmitter released by photoreceptors?
Acetylcholine
Glutamate
GABA
Dopamine
What is the effect of lesion at optic chiasma?
Right monocular blindness
Bitemporal hemianopia
Left homonymous hemianopia
Total blindness
Which structure is involved in the pupillary light reflex pathway?
Medial geniculate body
Edinger-Westphal nucleus
Red nucleus
Basal ganglia
Which component of the visual pathway crosses at the optic chiasma?
Temporal retinal fibers
Nasal retinal fibers
Foveal fibers
Macular fibers
Which cranial nerve carries afferent signals for light reflex?
Oculomotor
Trochlear
Optic
Trigeminal
What happens to the pupil in darkness?
Constriction
Dilation
No change
It contracts then dilates
