OLFACTORY, GUSTATORY, LIMBIC SYSTEM Flashcards Preview

JAMES D FIX fey > OLFACTORY, GUSTATORY, LIMBIC SYSTEM > Flashcards

Flashcards in OLFACTORY, GUSTATORY, LIMBIC SYSTEM Deck (20)
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1. Rhinorrhea would most likely result from a fracture of which bone ?
A. Ethmoid D. Nasal
B. Frontal E. Palatine
C. Learimal

1-A Rhinorrhea would most likely result froma a fracture of the ethmoid bone, which could tear the arecnoid membrane and result in a leakage of cerebrospinal fluid (CSF) into the nasal cavity

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2. Psychic blindness would most likely result from bilateral lesions in which of the following structures ?
A. Accumbens septi nucleus D. Superior colliculus
B. Amygdala C. Subieulum
C. Hippocampus

2-B Bilateral abletion of the amygdala results in psychie blindness the inability to recognize objects visually. Subject can see objects but do not understard what they see. This sign clas sically seen Kluvas. Bucy syndrome. (See “Answers and Explanation,” 4).

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3. The hippocampal formation ineludes all of the following structures EXEPT the
A. dentate gyrus D. amygdale
B. cornu ammonis E. alveolus
C. subiculum

3-D The hiplocampal formation consists of the dentate gyrus the hippocampus (cornu amoonis) and the subieulum. The alveus a fiber layer of the hippocampus, is the original of the fornix

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4. Which of the following signs and symptoms is NOT related to Kluver Bucy dyndromes ?
A. Hyperphagia D. Hypersexuality
B. pPsyehie blindnees E. Amnestic confabulation
C. Doelity

4-E Psychic blindness (visual agnosia). Docility hyperpagia, and hypersexuality are all signs and symptoms of Kluver. Bucy syndrome. Amnastic convabulation is the elastic manifestation of korsakoff syndrome a stage of Wernicke encephalopathy.

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5. All of the following statements concerning the primary olfactory cortex are correct EXCEPT
A. it receives olfactory input from the lateral olfactory satria
B. it projects to the thalamus
C. it projects to the amygdala
D. it includes the entorhinal cortex
E. it ineludes the prepiriform and peryamig daloid cortices

5-D The primary olfactory cortex (prepiriform and periamygdaloid cortises) projects to the primary olfactory cortex. The entorhinal cortex (also know as the second olfactory bulb. The olfactory tract projects via the lateral olfactory stria projects to the primary olfactory cortex. The entorhinal cortex (also nown as the second olfactory cortex : area 28) receives input from the primary olfactory cortex

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6. All of the following statements concerning the olfactory tract are corret EXCEPT
A. it is a telencephalic structure
B. it contains a nucleus
C. it projects fibers to the anterior commissure
D. it projects via the latural olfactory satria to the primary olfactory cortex
E. it conducts fibers to the thalamus

6-E The olfactory tract, a thelecephalic structure, contains a relay nueleus the anterior olfac lery nueleus, which projects fibers vita the anterior commissure to the opposite olfactory buld. The olfactory tract projects via the lateral olfactory stria to the primary olfactory cortex

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7. All of the following statements concerning taste receptor cells are correct EXCEPT
A. they are found in the palate
B. they mediate a special visceral afferent (SVA) modality
C. they are innervated by the vagal nerve verse the chorda tympani.
D. they are innervated by fibers that traverse the chorda tympani
E. they projects to the solitary tract of the medulla

7-E Taste receptor cell are found in the tongue, epiglottis palate and esophagus. They are special afferent (SVA) receptors and are innervated by the facial nerve (CN VII), the glossopharyngel nerve (CN IX), and the vagal nerve (CN X). the ehorda tympani contains taste fibers from the anterior two-thirds of the tongue with cell bodies located in the genicalute ganglion of CN VII of the potrous part of the temporal cell are modified epithelial cells : unlike olfactory receptor cell, witch are first-order neuron, they do not project to the central nervous system (CNS)

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8. The taste pathway includes all of the following way stations EXCEPT
A. the geniculate ganglion
B. the semilunar ganglion
C. the solitary nueleus
D. cortical area 43
E. the central tegmental tract

8-B The peripheral taste pathway ineludes the geniculate ganglion of CN VII, the central ganglion of CN IX, the nodese ganglion of CN X, the solitary tract and nucleus, the central tagmental tract, the ventral posteromedial nucleus of the thalamus, and the gustarory cortex, which is located in the parietal operculum (area 43) and in the parainsular cortex. The semilunar ganglion, the terminal ganglion of CN V, is not a structure of gestation

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9. All of the following statement concerning the circuit of Papez sare correct are correct EXEPT.
A. the hippoempal formation projects via the fornix to the mamillary body
B. the mamillothalamic tract interconneets body and the anterior nucleus of the thalamus
C. the anterior nucleus of the thalamus projects to the eingulate gyrus
D. the mamillary nucieus projects via the fornix to the hippocampal formation torhinal cortex to the hippocampal formation

9-D The mamillary body projects vita the mamillothalamic tract to the anterior nueleus of the thalamus and vita the mamillotagmental tract to the tagmental nuclei of the midbrain.

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10. All of the following statements concerning the hoippcampal formation are correct EXCEPT
A. it is there-layered poleocortex
B. it receives mossy fiber input the dentate gyrus
C. the output cell is the pyramidal neuron
D. major input is via the entorhinal cortex
E. major output is via the fornix

10-A The olfactory (piriform) cortex is paleocortex the hippoeampal cortex is archichorex. The arehicortex and paleocortex are both there layered cortices and are classified as allocortex (heterogenic cortex). The cingulate gryus is mosecortex, or juxtallocortex, a transilition cortex between the noecortex and allocortex.

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11. A meningeoma of the left olfactory groove could result in all of the following neurologic defieits EXCEPT
A. optical atropy on the left side
B. papilledema in the right side
C. anosmia on the right side
D. loss of visual acuity on the right side
E. pallor of the optic disk and loss of vision on the left side.

11-D This represent papillendema in contradictions to optic atroplay does not usually result in visual field defects or loss of visual acuity

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A. Stria terminalis
B. Stria medullaris
C. Medial forebrain bundle
D. Tractus retroflexus
E. Diagonal band of Broca

12. Consists of septohabenular fibers

12-D the stria medullaris (thalami) conteins septohabenular fibers (l.e., fibers that projects from the septal nuclei to the habenular nuclei). The stria mendullaris (singular) should not be confused with the striae medullares (plural). The striabe mendulares (rhombencephali) arise from the arcuate nuclei of the medulla and are seen on the floor of the rhomboid fossa

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A. Stria terminalis
B. Stria medullaris
C. Medial forebrain bundle
D. Tractus retroflexus
E. Diagonal band of Broca

13. Froms the medial border of the anterior perforated substance

13-E The diagonal band of Brace is the medial border of the anterior perforated substance. This fiber bundle contains amygdaloseptal and septoamygdalar fibers. The nucleus of the diagonal band project via the fornix to the hippcampal formation.

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A. Stria terminalis
B. Stria medullaris
C. Medial forebrain bundle
D. Tractus retroflexus
E. Diagonal band of Broca

14. Lies between the thalamus and the caudate nucleus

14-A The stria terminalis and the vena terminalis lie in the suleus terminalis between the thal ainus and the candate nueleus

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A. Stria terminalis
B. Stria medullaris
C. Medial forebrain bundle
D. Tractus retroflexus
E. Diagonal band of Broca

15. Projects from the ephithalamus to the mid brain tegmentum

15-D The tractus retroclaxus contains habenulointerpeduncular fibers that projects from the habenular nuelei of the apithalamus to the interpeduneular mueleus of the midbrain tegmentum.

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A. Stria terminalis
B. Stria medullaris
C. Medial forebrain bundle
D. Tractus retroflexus
E. Diagonal band of Broca

16. Is a major efferent pathway from the amygdala

16-A The stria terminalis is a major efferent pathway from the amygdale. It projects to the septal area and to the bed nueleus the stria terminalis.

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A. Amygdala
B. Hippocampal formation
C. Botch A and B
D. Neither A nor

17. Is located in the temporal lobe

17-C Both the hippocampal formation and the amygdalla are both involved in the septal area ad to the bed nueleus of the temporal (limbic) lobe

18

A. Amygdala
B. Hippocampal formation
C. Botch A and B
D. Neither A nor

18. Is destroyed in Kluver-Buey syndrome

18-C the hippocampal formation and the amygdala are both involved in Kluver Buey syndrome.

19

A. Amygdala
B. Hippocampal formation
C. Botch A and B
D. Neither A nor

19. Projects via the stria terminalis

19-A The amygdala project via the stria terminalis and via ventral amygdalofugal pathway. The stria terminalis is the most prominent projection from the amygdaloid complex.

20

A. Amygdala
B. Hippocampal formation
C. Botch A and B
D. Neither A nor

20. Receives direct olfactory input

20-A the maygdala receive both direct and indireet alfoctory input