title: Sex differences in dog corpus callosum.
abstract: Human studies reported sex differences in size and shape of the corpus callosum. These observations have been contested. The purpose of the present study is to investigate possible sex differences in the corpus callosum of dogs. The entire brains including the medulla from 12 female and 9 male adult mongrel dogs were removed and weighed. Total and partial area measurements of the callosum were made from photographic tracings of its outline. The callosum was partitioned into 3 regions; anterior half, posterior half, posterior one-fifth. The total corpus callosum, anterior half, posterior half, and posterior fifth or splenium areas were measured. Sex differences were found. The anterior half, the posterior half, the posterior fifth, and the total callosum were significantly greater in absolute area in males than in females.
authors.affiliation: Yüzüncü Yil University, Department of Anatomy Faculty of Medicine Van, Turkey.
authors.forename: A
authors.initials: A
authors.lastname: Aydinlioğlu
authors.forename: K
authors.initials: K
authors.lastname: Arslan
authors.forename: M C
authors.initials: MC
authors.lastname: Ragbetli
authors.forename: A
authors.initials: A
authors.lastname: Riza Erdogan
authors.forename: P
authors.initials: P
authors.lastname: Keleş
authors.forename: S
authors.initials: S
authors.lastname: Diyarbakirli
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D001921:Brain / Q000033:anatomy & histology; D003337:Corpus Callosum / Q000033:anatomy & histology*; D004285:Dogs / Q000033:anatomy & histology*; D005260:Female; D008297:Male; D009929:Organ Size; D012727:Sex Characteristics