Forebrain/Diencephalon Flashcards Preview

MS2 - Nervous System > Forebrain/Diencephalon > Flashcards

Flashcards in Forebrain/Diencephalon Deck (24):
1

What is the forebrain?

The telencephalon and diencephalon

2

The thalamus has both _________ and __________ nuclei.

relay; association

3

True or false: all sensory information passes through the thalamus.

False. Olfactory goes straight to piriform gyri of the medial temporal lobe.

4

Where is the VA/VL nucleus?

In the anterior section of the thalamus, just superior to the globus pallidus

5

What thalamic nucleus is superior to the MGN/LGN?

The pulvinar

6

True or false: the MGN and LGN are in the anterior section of the thalamus.

False. They are in the posterior section.

7

The anterior limb of the thalamocortical tract projects to the ______________.

frontal lobe

8

True or false: the retrolenticular thalamocortical tract projects to the occipital lobe.

True

9

The ______________ thalamocortical tract projects to the temporal lobe.

sublenticular

10

Severing the arcuate fasciculus does what to a person's speaking?

They cannot repeat words

11

What Brodmann areas are the primary sensory cortex, primary motor cortex, visual cortex, and primary auditory?

Primary sensory: 1-3
Primary motor: 4
Visual: 17
Primary auditory 41

12

Medial to the posterior limb of the internal capsule is the ______________, while medial to the anterior limb of the internal capsule is the ____________.

thalamus; caudate

13

The corticospinal tract passes through the __________ limb of the internal capsule.

posterior

14

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

15

Just anterior to the pulvinar nucleus are the ________________.

VPL, VPM, and VL

16

Trace out Papez's circuit.

Hippocampus -> fornix -> mammillary bodies -> mammillothalamic tract -> anterior nucleus (of the thalamus) -> cingulate gyrus -> hippocampus

17

Medial to the VA/VL is the ______________. To where does it project?

dorsomedial nucleus; prefrontal cortex

18

The red nuclei project to the _______________.

spinal cord

19

In the midbrain, the mammillothalamic tracts are just anterior to ______________.

the cerebral peduncles; the fornix are just anterior to the MTs

20

The descending tracts of the fornix are ___________ to the anterior commissure.

posterior

21

The VA/VL receives input from the ________________.

contralateral cerebellum and ipsilateral globus pallidus

22

What structure is between the subthalamic nuclei and the cerebral peduncles?

The substantia nigra

23

The red nuclei are _______________ to the subthalamic nuclei.

medial

24

Describe the CM's location in relation to the VPL/VPM.

Medial and slightly inferior

Decks in MS2 - Nervous System Class (111):