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Mesencephalon
| Question | Answer |
|---|---|
| what is the mesencephalon and where is it located? | known as the midbrain. sits between the forebrain (above) and the hindbrain (below) |
| what is the tectum? | the roof of the midbrain (dorsal side) |
| superior colliculi (upper pair) | involved in visual reflexes (ex. tracking objects with your eyes) |
| inferior colliculi (lower pair) | involved in auditory reflexes (ex. turning your head towards a sound) |
| tegmentum | bottom/majority of the mesencephalon (ventral side) |
| periaqueductal gray | pain modulation (peria = pain) |
| red nucleus | rich in iron; receives motor connection commands, sends them down the body |
| substania nigra | melanin-rich (dark in color); involved in movement planning |