Thalamus Flashcards
Which of the following white matter structures is immediately lateral to the VIM nucleus of the thalamus?
Internal capsule
Which of the following types of post-synaptic receptors is primarily responsible for peripheral vasoconstriction that is mediated by the activity of the ANS?
Alpha-1 adrenergic receptor
Which of the following thalamic nuclei projects to the striatum?
INtralaminar nuclei (centromedian, parafascicular)
Which of the following thalamic nuclei is involved in the relay of specific sensory information?
VPL, VPM, LGN, MGN, pulvinar
Which of the following thalamic nuclei (by Hassler terminology) contains the cerebellar receiving area?
Ventro oral posterior
Which of the following regions of the basal ganglia projects directly to the thalamus?
GPi
Which of the following is the predominant thalamic nuclear input to the primary sensory cortex?
VPL (also VPM)
Which of the following best describes the somatatopic relationship of the leg to the arm in the sensory nucleus of the thalamus?
The leg is LATERAL to the arm
(VP nucleus somatotopy)
The supplementary motor cortex receives projections from which of the following thalamic nuclei?
Ventral lateral nucleus
The nucleus ventralis posterior lateralis (VPL) of the thalamus receives terminals of …
Medial lemniscus and spinothalamic
The mamillothalamic tract ends in the thalamus in the …
anterior nucleus of the thalamus
The major output of the ventral anterior nucleus of the thalamus projects to which of the following?
Pre-motor cortex
The ansa lenticularis and the lenticular fasciculus merge in the subthalamus to form the
Thalamic fasciculus
Projections to the subfrontal cortex primarily originate from which of the following regions of thalamus?
? Mediodorsal thalamus (prefrontal cortex, limbic)
Most spinothalamic tract fibers proceed through the mesencephalon and end in which of the following nuclei?
Posteriolateral ventral nucelus (VPL)
Fibers that conduct proprioceptive information from the upper extremity terminate in which of the following structures of the brain?
Ventral posterior lateral (VPL) nucleus of the thalamus
Fibers of the secondary trigeminal pathway end in the …
VPM of the thalamus
Efferent fibers from the Ventral Posterior nucleus of the thalamus project mainly to the …
Postcentral gyrus
During surgery of a patient with severe Parkinson disease, electrophysiologic recordings show high-frequency synchronized neuronal activity in the GPi. Which of the following structures is most likely to trigger this abnormal activity?
Substantia nigra pars compacta
Anterior choroidal artery distribution infarct causes a visual defect by damaging which of the following structures?
Lateral geniculate body
An 80-yo woman with HTN and DM presents with the acute onset of new neurological symptoms. MRI shows a lacunar infarct in the VPM nucleus of the thalamus. Which of the following symptoms is most consistent with a small stroke in this area?
Likely loss of contralateral facial sensation and/or taste
