Flashcards in Forebrain/Diencephalon Deck (24):
What is the forebrain?
The telencephalon and diencephalon
The thalamus has both _________ and __________ nuclei.
True or false: all sensory information passes through the thalamus.
False. Olfactory goes straight to piriform gyri of the medial temporal lobe.
Where is the VA/VL nucleus?
In the anterior section of the thalamus, just superior to the globus pallidus
What thalamic nucleus is superior to the MGN/LGN?
True or false: the MGN and LGN are in the anterior section of the thalamus.
False. They are in the posterior section.
The anterior limb of the thalamocortical tract projects to the ______________.
True or false: the retrolenticular thalamocortical tract projects to the occipital lobe.
The ______________ thalamocortical tract projects to the temporal lobe.
Severing the arcuate fasciculus does what to a person's speaking?
They cannot repeat words
What Brodmann areas are the primary sensory cortex, primary motor cortex, visual cortex, and primary auditory?
Primary sensory: 1-3
Primary motor: 4
Primary auditory 41
Medial to the posterior limb of the internal capsule is the ______________, while medial to the anterior limb of the internal capsule is the ____________.
The corticospinal tract passes through the __________ limb of the internal capsule.
One of the key concepts in thalamocortical physiology is that all connections are _______________.
reciprocal; for instance, the LGN sends visual input to the visual cortex (via the thalamus), and the visual cortex sends information back to the LGN
Just anterior to the pulvinar nucleus are the ________________.
VPL, VPM, and VL
Trace out Papez's circuit.
Hippocampus -> fornix -> mammillary bodies -> mammillothalamic tract -> anterior nucleus (of the thalamus) -> cingulate gyrus -> hippocampus
Medial to the VA/VL is the ______________. To where does it project?
dorsomedial nucleus; prefrontal cortex
The red nuclei project to the _______________.
In the midbrain, the mammillothalamic tracts are just anterior to ______________.
the cerebral peduncles; the fornix are just anterior to the MTs
The descending tracts of the fornix are ___________ to the anterior commissure.
The VA/VL receives input from the ________________.
contralateral cerebellum and ipsilateral globus pallidus
What structure is between the subthalamic nuclei and the cerebral peduncles?
The substantia nigra
The red nuclei are _______________ to the subthalamic nuclei.