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Flashcards in THALAMUS Deck (21)
1

1. Which of the following thalamic nuclei has a motor function ?
A. Lateral dorsal nucleus D. Ventral posterior nucleus
B. Mediodorsal nucleus E. Lateral posterior nuclesu
C. Ventral lateral nucleus

1-C The ventral lateral nucleus receives motor input from the extrapyramidal (striatal) motor system (globus pallidus and substantia nigra) and from the cerebellum (dentate nucleus)

2

2. Spinothalamic fibers project to which of the following thalamic nuelei?
A. Ventral posteromedial (VPM) neuleus
B. Pulvinar
C. Ventral anterior nucleus
D. Ventral posterolaterla (VLP) nucleus
E. Anterior nucleus

2-D Spinothalamic fibers project to the ventral posterolateral (VPL) nucleus, which receives the medial lemniscus

3

3. Cerebellar fibers project to which of the following thalamic nuclei?
A. Ventral posteromedial (VPM) nucleus
B. Lateral dorsal nucleus
C. Lateral posterior nucleus
D. Ventral lateral nucleus
E. Anterior nucleus

3-D Cerebellar fibers (dentatocerebellar) project to the ventral lateral and ventral posterolateral (VPL) nuclei, which project to the motor cortex (area 4)

4

4. The globus pallidus projects to which set of thalamic nuclei?
A. Centromedian, ventral anterior, and ventral lateral nuclei
B. Ventral anterior, ventral lateral, and anterior nuclei
C. Ventral lateral, lateral dorsal, and lateral posterior nuclei
D. Mediodorsal, ventral posterolateral (VLP), and ventral posteromedial (VPM) nuclei
E. Centromedian, lateral dorsal, and lateral ventral nuclei

4-A The globus pallidus, a nucleus of the extrapyramidal (striatal) motor system, projects to three thalamic nuclei; the centromedian, the ventral anterior, and the ventral lateral nuclei of the thalamus

5

5. The thalamus receives procortical sensory input from all of the following modalities EXCEPT
A. general somatic sense D. audition
B. gustation E. olfaction
C. vision

5-E The thalamus receives procortical input from all sensory systems except the olfactory system. The olfactory pathway reaches the primary olfactory cortex (prepiriform and periamygdaloid cortex) without a relay in the thalamus.

6

6. All of the following statements concerning the mediodorsal nucleus are correct EXCEPT
A. it receives input from the amygdaloid nucleus
B. it receives input from the intralaminar nuclei
C. it is port of the limbic system
D. it is part of the extrapyramidal motor system
E. it has reciprocal connections with the prefrontal cortex

6-D The mediodorsal nucleus plays an important role in the expression of effect, emotion, and behavior. It is a limbic structure and is not a part of the extrapyramidal motor system

7

7. All of the following statements concerning the lateral geniculate (LGB) are correct EXCEPT
A. it projects to the lingual gyrus
B. it projects to the cuneus
C. it receives input from the retina
D. it receives input from the lateral lemniscus
E. it receives its blood supply from the anterior choroidal artery

7-D The lateral geniculate body (LGB) receives input from the retina and projects to the visual cortex (lingual gyrus and cuneus). It is irrigated by the anterior choroidal artery and the posterior cerebral artery (thalamogeniculate arteries). The lateral lemniscus is an auditory pathway

8

8. All of the following statements concerning the pulvinar are correct EXCEPT
A. it is the largest nucleus of the thalamus
B. it receives input from the visual association cortex
C. it receives input from the superior colliculus
D. it has reciprocal connections with the parietal association cortex
E. a lesion results in a contralateral hemianopia

8-E The pulvinar the largest nucleus of the thalamus, is a dorsal tier nucleus and has reciprocal connections with the visual association cortex (areas 18 and 19). The pulvinar is reciprocally connected with the parietal association cortex (areas 39 and 40). It also receives input from the superior colliculus and the pretectal area. Destruction of the pulvinar does not result in a visual field deficit (hemianopia).

9

9. Infarction of the right internal capsule could result in all of the following defects EXCEPT
A. left hypesthesia D. tongue deviates to left side
B. right homonymous hemianopia E. plantar reflex extensor on left side
C. left facial weakness

9-B Infarction of the right internal capsule could result in a left homonymous hemianopia

10

10. A capsular stroke is most commonly caused by occlusion of which of the following arteries?
A. Anterior cerebral artery
B. Recurrent artery of Heubner
C. Lateral striate arteries
D. Posterior communicating artery
E. Direct branches of the internal carotid artery

10-C Acapsular stroke is most commonly caused by occlusion of the lateral striate branches of the middle cerebral artery.

11

A. Anterior nucleus
B. Centromedian nucleus
C. Lateral geniculate nucleus
D. Mediodorsal nucleus
E. Pulvinar
F. Ventral anterior nucleus
G. Ventral lateral nucleus
H. Ventral posterolateral (VPL) nucleus
I. Ventral posteromedial (VPM) nucleus

11. Receives input from the ipsilateral central tegmental tract

11-D The ventral posteromedial (VPM) nucleus receives taste input via the ipsilateral central tegmental tract. The VPM nucleus receives sensory input from the head and oral cavity.

12

A. Anterior nucleus
B. Centromedian nucleus
C. Lateral geniculate nucleus
D. Mediodorsal nucleus
E. Pulvinar
F. Ventral anterior nucleus
G. Ventral lateral nucleus
H. Ventral posterolateral (VPL) nucleus
I. Ventral posteromedial (VPM) nucleus

12. Has reciprocal connections with the inferior parietal lobule

12-E The pulvinar, the largest thalamic nucleus, has reciprocal connections with the inferior parietal lobule

13

A. Anterior nucleus
B. Centromedian nucleus
C. Lateral geniculate nucleus
D. Mediodorsal nucleus
E. Pulvinar
F. Ventral anterior nucleus
G. Ventral lateral nucleus
H. Ventral posterolateral (VPL) nucleus
I. Ventral posteromedial (VPM) nucleus

13. Receives input from the contralateral lateral spinothalamic tract

13-H The ventral posterolateral (VPL) nucleus receives input from the contralateral lateral spinothalamic tract

14

A. Anterior nucleus
B. Centromedian nucleus
C. Lateral geniculate nucleus
D. Mediodorsal nucleus
E. Pulvinar
F. Ventral anterior nucleus
G. Ventral lateral nucleus
H. Ventral posterolateral (VPL) nucleus
I. Ventral posteromedial (VPM) nucleus

14. Projects to the putamen

14-B The centromedian nucleus projects to the putamen; this thalamic nucleus also has reciprocal connections with the motor cortex

15

A. Anterior nucleus
B. Centromedian nucleus
C. Lateral geniculate nucleus
D. Mediodorsal nucleus
E. Pulvinar
F. Ventral anterior nucleus
G. Ventral lateral nucleus
H. Ventral posterolateral (VPL) nucleus
I. Ventral posteromedial (VPM) nucleus

15. Receives the dentatothalamic tract

15-G The ventral lateral nucleus receives contralateral cerebellar input via the dentatothalamic tract

16

A. Anterior nucleus
B. Centromedian nucleus
C. Lateral geniculate nucleus
D. Mediodorsal nucleus
E. Pulvinar
F. Ventral anterior nucleus
G. Ventral lateral nucleus
H. Ventral posterolateral (VPL) nucleus
I. Ventral posteromedial (VPM) nucleus

16. Plays a role in the expression of affect, emotion, and behavior (limbic function)

16-D The mediodorsal nucleus plays a role in the expression of affect, emotion, and behavior (limb function). It receives input from the amygdala and has reciprocal connections with the prefrontal cortex. Lesions of the mediodorsal nucleus are found in patients with the Korsakoff amnestic state

17

A. Anterior nucleus
B. Ventral lateral nucleus
C. Medial geniculate (nucleus) body
D. Ventral posteromedial (VPM) nucleus
E. Ventral posteroinferior (VPI) nucleus

17. Brachium of the inferior colliculus

17-C The medial geniculate body receives auditory input via the brachium of the interior colliculus

18

A. Anterior nucleus
B. Ventral lateral nucleus
C. Medial geniculate (nucleus) body
D. Ventral posteromedial (VPM) nucleus
E. Ventral posteroinferior (VPI) nucleus

18. Thalamic fasciculus (H1)

18-B The ventral lateral nucleus receives input from the globus pallidus via the thalamic fasciculus (H2)

19

A. Anterior nucleus
B. Ventral lateral nucleus
C. Medial geniculate (nucleus) body
D. Ventral posteromedial (VPM) nucleus
E. Ventral posteroinferior (VPI) nucleus

19. Mamillothalamic tract

19-A The ventral lteral nucleus receives input from the mammillary nuclei via the mamillothalmic tract. This is a major link in the Papez circuit.

20

A. Anterior nucleus
B. Ventral lateral nucleus
C. Medial geniculate (nucleus) body
D. Ventral posteromedial (VPM) nucleus
E. Ventral posteroinferior (VPI) nucleus

20. Dentatothalamic tract

20-B The ventral lateral nucleus receives cerebellar input from the dentate nucleus via the dentatothalamic tract

21

A. Anterior nucleus
B. Ventral lateral nucleus
C. Medial geniculate (nucleus) body
D. Ventral posteromedial (VPM) nucleus
E. Ventral posteroinferior (VPI) nucleus

21. Gustatory (taste) pathway

21-D The ventral posteromedial (VPM) nucleus receives special visceral afferent (SVA; taste fibers from the central tegmental tract).