5. ID the 3 structures circled and lettered in red. 6. Which thalamic nucleus pr

Question

5. ID the 3 structures circled and lettered in red. 6. Which thalamic nucleus provides input to A? What part of the brain provides input to B? 7. ID structure circled in purple. Name 2 sources Of fibers in this structure Q5-12 8. Name 3 nuclei you Would find within the Green box. 9. What fiber bundle provides input to the structure in blue box? Name 2 types of fibers in the bundle 10. What structure does The orange line trace? 11. What is the structure Circled in black? Worth 2 points! 12. What is the principle source of input to the structure circled in fuchsia? What is the specific Target of fibers arising from the structure? Through what structure does its fibers reach the target?

Explanation / Answer

5.) A-Cingulate gyrus, B-Sulcus of corpus callosum, C-Subcallosal (parolfactory) area

6.) Cingulate gyrus receives inputs from the thalamus and the neocortex, and projects to the entorhinal cortex via the cingulum.

7.) Anterior commisure. The great majority of fibers connecting the two hemispheres travel through the corpus callosum & hippocampal commissure.

8.)The major 3 nuclei found here are inferior colliculus, principal midbrain nucleus of the auditory pathway and receives input from several peripheral brainstem nuclei, the auditory cortex and medial geniculate nucleus of the diencephalon.

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