External Features of the brainstem and the diencephalon Flashcards
What part of the brain lies just superior to the spinal cord?
The brainstem
What is the brainstem made up of?
Midbrain
Pons
Medulla
Which fossa does the brainstem lie in?
The posterior cranial fossa
What, embryologically, does the brainstem arise from?
Midbrain
Hindbrain
What is the name given to the groove that separates the pons from the medulla?
Pontomedullary Junction
What is the ventral aspect of the medulla marked by on each side?
The pyramids
Olive
What does the medulla become continuous with, and through which foramen does it pass through to do this?
Spinal Cord
Foramen Magnum
What are the main surface features of the pons?
Origin of trigeminal nerve
Middle Cerebellar Peduncle
What is immediately superior to the midbrain?
The Diencephalon
What is immediately inferior to the midbrain?
The pons
What type of fibres are the cerebral peduncles made up of?
Motor fibres
What emerges between the cerebral peduncles?
The 3rd cranial nerve
What is the diencephalon made up of?
Thalamus
Hypothalamus
What does the diencephalon lie between?
Cerebral Hemispheres
Midbrain
What are the names of the projections of the hypothalamus that are visible on the surface called?
Mammillary bodies
