Assertion: medulla's matter | /r/HasProperty | grey
Facets:
Source sentences:
text: The medulla contains both white and grey matter, and four cranial nerves stem from this region: the glossopharyngeal nerve coordinates some taste sensations and mouth movements; the vagus nerve controls mouth movements, voice and the gag reflex; the accessory nerve coordinates head and neck movements; and the hypoglossal nerve controls tongue movements and muscles involved in our speech.