Canine Brain Divisions


Lateral View (Dog)


Sheep Median View


Equine Brainstem
Brain Divisions - three different ways to subdivide the brain

1. Embryonic divisions:
• Telencephalon . . .
• Diencephalon . . .
• Mesencephalon . . .
• Metencephalon . . .
• Myelencephalon . . .

2. Gross anatomy divisions:
• Cerebrum . . . (telencephalon)
• Cerebellum . . . (part of metencpehalon)
• Brainstem . . . (di-, mes-, pons, myel-encephalon)

3. Clinically useful divisions:
• Forebrain (telencephalon & diencephalon)
-- mental status; voluntary movement; vision
• Hindbrain (metencephalon & myelencephalon)
-- cerebellum & vestibular syndromes; nerve deficits

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