Variations in shape and dimensions of sigmoid groove, venous portion of jugular foramen, jugular fossa, condylar and mastoid foramina classified by age, sex and body side.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002508:Cephalometry; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009777:Occipital Bone / Q000033:anatomy & histology; D012737:Sex Factors; D012886:Skull / Q000033:anatomy & histology*; D013701:Temporal Bone / Q000033:anatomy & histology