Visual and auditory pathways, blood supply to the CNS Flashcards
Neurons in the retina that are sensitive to light are known as
Photoreceptor cells
Which of the following statements concerning rods is incorrect?
Rods are much more numerous than cones
Rods are absent at the central part of the fovea
Rods contain rhodopsin
Rods are responsible for vision in dim light
Rods consist of an outer, inner and cone segment
Rods consist of an outer, inner and cone segment
Blurred or a lack of vision in the central field is a symptom of what condition?
Macular degeneration
Fibres of the optic tract travel to which nuclei of the thalamus
Lateral geniculate nuclei
Fibres that project from the lateral geniculate nucleus of the thalamus to the primary visual cortex are known as what?
Geniculocalcarine tract
A lesion to the optic chiasm is likely to result in which visual impairment?
Bitemporal hemianopia
Where is the organ of Corti housed?
Scala media
The spiral ganglion contains the cell bodies of what?
Primary afferents of the auditory pathway
Which of the following statements concerning the auditory pathway is incorrect?
Fibres projecting from the cochlear nerve to the ventral cochlear nucleus relay information concerning the direction of sound
Fibres projecting from the cochlear nerve to the dorsal cochlear nucleus relay information concerning the quality of sound
Fibres projecting from the dorsal cochlear nucleus relay information to the superior olivary nucleus
Fibres from both the dorsal and ventral cochlear nuclei decussate at the pons
Fibres that carry information concerning the direction of sound travel from the superior olivary nucleus to the inferior colliculus via the lateral lemniscus
Fibres projecting from the dorsal cochlear nucleus relay info to the superior olivary nucleus
Which of the following is not a vestibular nuclei?
Superior vestibular nucleus
Inferior vestibular nucleus
Geniculate vestibular nucleus
Medial vestibular nucleus
Lateral vestibular nucleus
Geniculate vestibular nucleus
