Equine Brainstem
Ventral View of Brain
Dorsal Brainstem
Sheep Brain
Components: [NOTE: * = not paired]
Cerebellum . . .* (connected to brainstem by peduncles)
Pons . . .* (part of the brainstem)
Pons Regions:
• tegmentum - nuclei, tracts, & reticular formation
• ventral pons (pontine nucle & transverse pontine fibers
• fourth ventricle*
Surface Features . . .
Ventral surface: (when removed from pons)
• transverse pontine fibers
• trigeminal nerve
Dorsal surface: (cerebellum removed)
• cerebellar peduncles
• rostral, middle, caudal
• fourth ventricle
• rostral medullary vellum (roof of ventricle)
Median surface:
• ventral pons (transverse fibers & pontine nuclei)
• tegmentum
• fourth ventricle & rostral medullary vellum
Typical-Section Features:
• trigeminal nerve
• ventral pons (transverse fibers & pontine nuclei)
• tegmentum
• fourth ventricle & rostral medullary vellum
• cerebellar peduncles