Assertion: brainstem's part | /r/CapableOf | expand midbrain
Facets:
Source sentences:
text: As the embryo develops, the anterior part of the neural tube expands and forms three primary brain vesicles, which become the forebrain (prosencephalon), midbrain (mesencephalon), and hindbrain (rhombencephalon).
text: The central part of the brain includes the brain stem and the midbrain.