5. ID the 3 structures circled and lettered in red. 6. Which thalamic nucleus pr
ID: 3518835 • Letter: 5
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
Answer 5. A- Cingulate gyrus
B- Subcallosal area
C- Paraterminal gyrus
Answer 6. Anterior thalamic nuclei which is composed of both cholinergic and serotonergic fibers provides input to cingulate gyrus.
Limbic cortex provides input to subcallosal area.
Answer 7. Optic chiasma. Composed of medial and Lateral fibers.
Answer 8. Cerebral peduncle composed of 2 occulomotor and red nuclei.
Answer 9.Cerebral aqueduct. Mixed bundle fibers composed of sensory and motor nerves.
Answer 10. Sulcus
Answer 11. Fourth ventricle and choroid plexus
Answer 12. Pons. Forebrain provides input to it. Four cranial nerves numbering from 5 to 8 pass through them. Their target is cerebellum. It helps in hearing, equilibrium, taste and many facial sensations.
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