Assertion: basilar artery | /r/CapableOf | ascend in shallow medial groove
Facets:
value: on the ventral pontine surface
type: LOCATION
value: vertically
type: MANNER
Source sentences:
text: The basilar artery arises at the mid-medullary level, ascends vertically in a shallow medial groove on the ventral pontine surface, reaches the interpeduncular cistern and divides into two posterior cerebral arteries (terminal branches of the basilar artery).