Basal Nuclei

Question 1

The caudate nucleus wraps around which two structures

Answer 1

The lentiform (palladium and putamen) and the thalamus. It projects out of the screen (vertical) and loops over the two structures, then dives back into the brain. At cross section, you can see head of the caudate nucleus and then tail down below the thalamus.

Head and tail are in contact with the thalamus and the tail terminates at the amygdaloid body.

Question 2

Difference between corpus striatum and striatum

Answer 2

Striatum- Caudate nucleus and putamen (these two are connected via grey matter)

Corpus striatum- Striatum + the palladium OR could word it as the lentiform + the caudate.

In other words, all portions of the basal nuclei except the amygdaloid body.

Question 3

Associations to the basal ganglia

Answer 3

Substantia nigra and subthalmic nuclei

Question 4

Afferent (sensory to the corpus striatum) messaging to the corpus striatum

Answer 4

Corticostriate- excitatory, glutamate
Thalamostriate- Excitatory, glutamate
Nigrostriate- Inhibitory, dopamine

Question 5

Efferent (motor from corpus striatum to body) messaging from the corpus striatum

Answer 5

Striatonigral- inhibitory, GABA, Ach, Substance P?
Striatopallidal- inhibitory, GABA
Pallidofugal- Inhibitory, GABA