This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': 'Cephalic index is most useful in the identification of - \nSelect and explain. \nA. Age, B. Sex, C. Religion, D. Race', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cephalic index is used for the determination of race. Race determination of skeleton\nA) Cephalic Index\n(C) \xa0Cephalic index is defined as the index of the breadth of the skull.\nCephalic index = Max. the breadth of the skull —————————— Max. AP length of skull x 100\n\xa0Based on cephalic index races are classified into following three:-\n1) Dolichocephalic (long-headed): Cephalic index is 70-75 and is a feature of Caucasians,\nPure Aryan (Indians), Aborigines, and Negroes.\n2) Mesaticephalic (medium headed): Cephalic index is 75-80 and is a feature of Europeans, and Chinese.\n3) Brachycephalic (short-headed): Cephalic index is more than 80 and is a feature of Mongolian.\nB) Brachial Index - Brachial index is defined as- Brachial index = Length of radius ———————— Length of humerus x 100\n\nBrachial index is 74.5 in Europeans and 78.5 in Negroes.\n\nC) Crural index \xa0It is defined as- Crural index = Length of tibia ——————— Length of femur x 100 \xa0Crural index is 83.3 in Europeans and 86.2 in Negroes.\nD) Humero-femoral index (HF index) - It is defined as- Humero-femoral index = Length of humerus ———————— Length of femur x 100 \xa0It is 69 in Europeans and 72.4 in Negroes.\nE) Intermembral index - t is:- Intermembral index = Length of radius + humerus ———————————— Length of tibia + femur x 100\n\nIt is almost the same (70) in Europeans and Negroes.\n\nF) Orbit \xa0It is square in Pure Aryans (Indians), Negroes, and Arborigines. It is triangular in Chinese and Europeans. It is ‘rounded’ in Mongols.\nG) Nasal opening It is broad in Pure Aryans (Indians), Negroes, and Arborigines. It is narrow and elongated in Chinese and Europeans.\nIt is ‘rounded’ in Mongols.\nH) Palate is rectangular in Pure Aryans (Indians), Negroes, and Arborigines.\nIt is triangular in Chinese and Europeans. It is rounded (or horseshoe-shaped) in Mongols.', 'role': 'assistant'}]