Variations in form of the hypoglossal canal.
Variation in the nature and extent of division of the hypoglossal canal can be classified by a simple scoring scheme. Applied to three series of crania of differing provenance, the results indicate a continuity in expression of the trait rather than the dichotomous character utilized in previous studies. The similarity in results in these three populations, of widely differing environment, suggests fairly strict canalization of development.
D000293:Adolescent; D000328:Adult; D001317:Austria; D002508:Cephalometry; D004534:Egypt; D049673:History, 20th Century; D049690:History, Ancient; D006801:Humans; D007002:Hypoglossal Nerve; D007199:Indians, South American; D007558:Italy; D008297:Male; D008875:Middle Aged; D009777:Occipital Bone / Q000033:anatomy & histology*; D010164:Paleopathology; D010568:Peru