Ccommissural tracts

Question 1

what is the largest white matter structure in the brain?

Answer 1

corpus callosum

Question 2

what are the 4 regions of the longitudinal fissure?

Answer 2

ROSTRUM
GENU
BODY
SPLENIUM

Question 3

What does the anterior commissure connect?

Answer 3

Both temporal hemispheres

Question 4

what is the anterior commissure responsible for?

Answer 4

1) sensation of sharp pain

2) plays a role in processing smells, emotion, speech

Question 5

where does the posterior cross and what is it important for?

Answer 5

• crosses midline on dorsal part of aqueduct

- important for bilateral pupilary light reflex

Question 6

where does the habenular commissure sit?

Answer 6

Infront of pineal gland

Question 7

what does the habenular commissure connect?

Answer 7

habenular nuclei on both sides of diencephalon

Question 8

what is habenular commissure involved in?

Answer 8

sleep/wake cycles, learning, stress response & reproductive behaviours

Question 9

what other name does the hippocampal commissure have?

Answer 9

commissure of the fornix

Question 10

What does the hippo. commissure connect?

Answer 10

2 hippocampi across midline