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NWHSU Mash CNS2audvi
NWHSU Mash CNS Test 2 auditory and visual
| Question | Answer |
|---|---|
| name the nuclei described: fibers terminate on inferior colliculus | dorsal and ventral cochlear nuclei |
| What sensory epithelium responds to rotary movements of the head | crista ampullaris |
| in the basic auditory pathway the right inferior colliculus receives afferents from _________ | left and right dorsal and ventral cochlear nerve |
| deafness in the left ear most likely results from a problem located where? | in the left periphery |
| in the basic auditory pathway, the left anterior and posterior cochlear nuclei terminate on the ________ | left and right inferior colliculus |
| which sensory epithelium senses linear acceleration and deceleration | macula sacculi |
| what is the basis of organization in area 41, 42 | tonotopic/frequency |
| Describe the deficit resulting from damage to the left auditory association cortex | receptive aphasia; you can hear incoming words but you cant put meaning to it |
| the left lateral lemniscus is formed from fibers originating on ________ nuclei | right and left dorsal and ventral cochlear nuclei |
| which accessory auditory nucleus is required for the ability to discern distance and direction | superior olivary nucleus |
| which accessory auditory nucleus terminates on the organ of corti | superior olive |
| name the nuclei described: receive fibers from pretectal nuclei in the pupillary light response | Edinger-westphal |
| in the pathway for pupillary dilation ganglion cells terminate on | hypothalamus |
| blindness in the left eye is most likely due to a lesion located ________ | in the left optic nerve |
| ganglion cells of the retina terminate on _______ in the pathway for conscious visual awareness | lateral geniculate |
| in the pathway for vision ganglion cells terminate on | lateral geniculate |
| where is the cortical representation of the left macular fields | left posterior, superior and inferior calcarine gyri |
| give two reasons why the fovea centralis is the area of highest visual acuity | no convergence; mostly cones |
| A person has visual blindness in the diagram below (lateral halfs of left and right), where is the visual pathway most likely occluded | optic chiasm |
| which two layers are seperated in a detached retina | pigmented layer and photoreceptive layer |
| A person has visual blindness in the diagram below (lateral halfs of left and right), what is the likely cause of this interruption | pituitary tumor |
| in general, information from the macula projects to the _____ portion of area 17 | posterior |
| in the pathway for pupillary constriction ganglion cell axons terminate on | superior colliculi |
| Which area of retina contributes to the very highest visual acuity | fovea centralis |
| The apical (opposite of the basal)end of the basilar membrane vibrates maximally to | low frequency |
| which portion of the visual pathway is most likely damaged (diagram shows lower right quadrant of both circles darkened)options are L/R optic tract, L/R temporal loop, LR straight fibers | L straight fibers |
| Ganglion cells of the retina: receive afferents from the ____neurons in the retina | bipolar |
| Ganglion cells of the retina: terminate on the _____for eye movement | superior colliculus for eye movement; lateral geniculate nucleus for visual perception; pretectum pupillary light reflex; suprachiasmatic nucleus of the hypothalamus for diurnal rhythms and hormonal changes. |
| Consider an interruption of the left parietal (straight ) geniculocalcarine fibers. Darkent the areas of the diagram representing the areas of visual blindness | ?right lower quadrant darkened |
| Which retiuclar nuclei are required for conjugate eye movement | gaze centers pontine |
| how do the eyes move with stimulation of right area 8 | opposite direction to the stimuli |
| in general, olfactory areas send information to the ____areas | limbic |
| The ___is a large group of fibers connecting the hippocampal formation with the maxillary nucleus and is part of the ____system | fornix, limbic |
| the lamellae of rods contain | rhodopsin |
| what muscles open and close eye lids | levator palpebrae superioris mm, orbicularis oculi mm |
| a vascular lesion results in unilateral hearing loss and deficits in general sensation to the head and body. which artery is involved | pica (posterior inferior cerebellar artery) |
| a person has visual blindness in the darkened areas (right half of both), what fibers of the visual pathway are interrupted | left optic tract |
| a person has visual blindness in the darkened area below (left whole): location of lesion, if light shone in L eye, right respond? if light shone in R eye, left respond? | L eye, No, Yes |
| consider an interruption of left parietal (straight) fibers, darken VISUAL blindness | darken lower right quadrant |
| what is the function of the pigment cells of the retina | absorb light, decrease light scattering |
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AnatomyMash
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