The hypoglossal artery and hypoglossal canal.
D000368:Aged; D000792:Angiography; D002339:Carotid Arteries / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002343:Carotid Artery, Internal / Q000002:abnormalities; D005260:Female; D006801:Humans; D009777:Occipital Bone / Q000000981:diagnostic imaging*; D014054:Tomography; D014059:Tongue / Q000098:blood supply*