Lecture 2 - Brain & Cranial Nerves

Question 1

what are the major divisions of the brain?

Answer 1

the forebrain (cerebral hemisphere)
the midbrain (amygdala, thalamus, hypothalamus, hippocampus, pituitary gland, pineal gland, crus cerebri)
the brainstem (pons, cerebellum, medulla oblongata)

Question 2

what are the vital centres in the brainstem?

Answer 2

respiration, cardiovascular and reflexes

Question 3

how many cranial nerves attach to the brainstem?

Answer 3

10 (excluding 1+2)

Question 4

what does the longitudinal fissure separate?

Answer 4

2 hemispheres

Question 5

what does the lateral sulcus separate?

Answer 5

temporal lobe from the frontal and parietal lobes

Question 6

what does the central sulcus separate?

Answer 6

frontal lobe from parietal lobe

Question 7

what does cerebral deep grey matter consist of?

Answer 7

basal nuclei (motor) and forebrain nuclei (arousal, learning, memory, motor)

Question 8

what is are tracts?

Answer 8

bundles of axons travelling to similar destinations

Question 9

what are the 3 types of tracts?

Answer 9

commissural fibres - form commissures which allow communication between hemispheres
association fibres - connect different parts of the same hemisphere
projection fibres - run vertically going to and from cerebral cortex

Question 10

what are the 12 cranial nerves, their function, and M/S?