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CNS Exam 2 Mash #2

QuestionAnswer
In general the deep nuclei of the cerebellum receive excitatory stimulation from _______ and inhibitory stimulation from _________. Afferents to cerebellum Purkinje cells
[2] In the pathway for conscious vestibular awareness, the vestibular nuclei project to ________ VPM nucleus of the thalamus
Fibers of the lateral lemniscus terminate on the ____________ Inferior colliculi
LOW frequency sounds maximally stimulate the _________ end of the organ of Corti Apical
Which area of the basilar membrane vibrates maximally to LOW frequency sounds? Apical
Ganglion cells of the retina terminate on the _______ to affect circadian rhythms Hypothalamus
Ganglion cells of the retina terminate on the __________ for endocrine response to light Hypothalamus
Stimulation of area 8 on left side will cause the eyes to move ___________. Right
List afferents to the Right pontocerebellum LEFT pontine nuclei, inferior olivary nucleus, arcuate nucleus
Name all of the afferents to the LEFT dentate nucleus LEFT pontine nuclei, inferior olivary nucleus, arcuate nucleus
List the afferents to LEFT fastigial nucleus from the brainstem Vestibular nuclei (excitatory)
List the afferents to LEFT fastigial nucleus from outside the CNS Vestibular apparatus (Excitatory)
List the afferents to LEFT fastigial nucleus from within the cerebellum Purkinje (Inhibitory)
Coordination of head and eye movements is accomplished by communication between brainstem nuclei and the LMNs. Via which tracts are these connections made? Medial vestibulospinal Medial longitudinal fasciculus
Explain how a brainstem lesion could result in an incomplete Horner’s syndrome Interruption of fibers descending from hypothalamus to pre-ggl ∑
A person presents with paralysis of the muscles of facial expression on the LOWER LEFT side of face a) most likely site of a lesion b) motor deficit would be likely c) what general sensory deficits, if any, would be possible d) what do you do? a) cerebral cortex b) possibly upper L and R facial mm c) loss of taste to R anterior 2/3 of tongue d) send to ER
In general the RIGHT side of spinocerebellum receives input from the R/L side of the body and controls muscles on the R/L side of the body Right Right
RIGHT sided hemiballismus suggests a lesion in the LEFT subthalamic nucleus (T or F) True
In ascending reticular activating system (ARAS), the reticular nuclei Receive input from two major sources, name them. Rostral and caudal nucleus solitarius
In ascending reticular activating system (ARAS), the reticular nuclei: Project to several functional thalamic groups, name major one. Limbic projection group of thalamus
Inactivation of ARAS nuclei in midbrain would result in _______ Unconsciousness (coma)
In ARAS, what are two major sources of input to reticular nuclei? Rostral and caudal nucleus solitarius
What nucleus forms the paleostriatum? Globus Pallidus
[3] Describe the functional lobe of the cerebellum described. Receives afferents from the lateral cuneate nucleus. A. Vestibulocerebellum B. Spinocerebellum C. Pontocerebellum Spinocerebellum
A person has a vascular lesion which gives signs and symptoms of both basal nuclear and pontocerebellar dysfunctions. Give the site of lesion. Anterior limb of internal capsule
[3] A patient has an inability to smile on the R side. If this is accompanied by an inability to close the eyes tightly where is the lesion. R peripheral facial nerve L peripheral facial nerve R lateral cerebral cortex L lateral cerebral cortex R peripheral facial nerve
[2] Patient has an inability to smile on the R side. Which general sensory deficits would be expected. Decreased pain over the R cheek Decreased pain over the L cheek Decreased pain in the R arm Decreased pain over the L arm None above None above
[3] A patient has an inability to smile on the R side. What other deficits may be present. Decreased salivation and decreased taste sensation
[3] A patient has an inability to smile on the R side. If the ability to close eyes is normal what location is most likely? R peripheral facial nerve L peripheral facial nerve R lateral cerebral cortex L lateral cerebral cortex L lateral cerebral cortex
[2] A patient has an inability to smile on the R side. Which of the following sensory deficits are expected. Decreased pain over the R cheek Decreased pain over the L cheek Decreased pain in R arm Decreased pain over the L arm None of the above Decreased pain over the R cheek
[2] What sensory epithelium responds to rotary movements of the head? Crista ampullaris
Name the cranial nerve nuclei described. Innervates muscles derived from Arch II Facial Motor
Name the cranial nerve nuclei described. Receives afferents from the tongue. Solitarius, Superior part
Name the cranial nerve nuclei described. Terminates on inferior colliculus. Cochlear nuclei, dorsal and ventral
A patient is unable to smile on the L side but can close the eyes normally. Which deficits would also be present? Weakness of mm of mastification on R Weakness of R tongue Weakness of L tongue Horner's syndrome Recpetive aphasia Weakness of L tongue and receptive aphasia
Name the functional lobe of the cerebellum described. Affects lower motor via the medial longitudinal fasciculus. Vestibulocerebellum Spinocerebellum Pontocerebellum Spinocerebellum
[2] Name the functional lobe of the cerebellum described. Efferent fibers decussate in the superior cerebellar peduncle. Vestibulocerebellum Spinocerebellum Pontocerebellum Pontocerebellum and spinocerebellum
Name the functional lobe of the cerebellum described. Functions may be affected by a lesion in the internal capsule. Vestibulocerebellum Spinocerebellum Pontocerebellum Vestibulocerebellum
Name the functional lobe of the cerebellum described.Roughly equivalent to the archicerebellum Vestibulocerebellum Spinocerebellum Pontocerebellum vestibulocerebellum
Involuntary movements of the tongue and face induced by antipsychotic drugs. tardive dyskinesia
Describe the functional region of the cerebellum described. Deep nucleus receives inhibitory afferents from the cortex. Vestibulocerebellum Spinocerebellum Ponotocerebellum Vestibulocerebellum Spinocerebellum Ponotocerebellum (ALL)
Describe the functional region of the cerebellum described. Afferent relay vast amounts of information from the contralateral cerebral cortex Vestibulocerebellum Spinocerebellum Ponotocerebellum Pontocerebellum
In the basic auditory pathway, the right inferior colliculus projects to the __________. Right medial geniculate
Name the cranial nerve nuclei described. Parasympathetics to the ileum Dorsal motor nucleus
Name the cranial nerve nuclei described. Sensory nuclei supplied by the posterior inferior cerebellar artery. Oculomotor
Name the cranial nerve nuclei described. Supplied by the anterior spinal artery. Hypoglossal
Vestibular nuclei receive afferents from _________ via the vestibular nerve (be very specific) Maculae and crista ampullaris
Vestibular nuclei receive afferents from _________ via the medial longitudinal fasciculus Extraocular nuclei
Vestibular nuclei receive afferents from _________ via the inferior cerebellar peduncle Fastigial
Vestibular nuclei project to the __________ via the medial longitudinal fasciculus Nuclei of CN III, IV, VI
Vestibular nuclei project to the __________ via the inferior cerebellar peduncle Fastigial nucleus
Name the cranial nerve nuclei described. Parasympathetic fibers innervate the parotid gland. Inferior salivatory
Name the cranial nerve nuclei described. Innervates the right superior rectus. L occulomotor nucleus
Name the cranial nerve nuclei described. Efferent fibers join the vagus nerve Nucleus ambiguous Dorsla motor nucleus of X
[2] Name the cranial nerve nuclei described. Receives afferents from the inferior ggl of glossopharyngeal nerve. nucleus solitarius Rostral and Caudal portions
Created by: T1NWHSU