ANTHROP 3FA3 Lecture Notes - Lecture 19: Hyperdontia, Deciduous Teeth, Wormian Bones
26 Apr 2019
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March 4, 2019: characteristics that deviate from normal skeletal anatomy, not pathological, not necessarily rare or unique but theyre individualizing features, caused by, genetic mutations, epigenetic influences, maternal conditions, environmental stressors, nutritional stressors. Persistent metopic sutures: suture between the 2 frontal bone halves, usually fuses between 3-9 months old. Extra sutural bones: sometimes called wormian bones when along lambdoid sutures. Transitional vertebrae: require relatively complete vertebral column, count the number of vertebrae present, are these extras, where, what is the morphology like, most similar to thoracic, more similar to lumbar or sacral. Polydactylism: extra fingers/toes, common congenital digital anomaly . Missing teeth: hypodontia: congenitally missing teeth, often hereditary, in european ancestries, 25-35% missing 3rd molars, 2%-3% missing upper lateral incisors or 2nd premolars, dental interventions. Fibular hemimelia: congenital absence of the fibula, fibula may not form or be shorter, rare, but the most common absence of long bones.
