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Comprehensive
Dictionary Suite
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cephalic index the ratio of the greatest width of a human head to its greatest length, multiplied by one hundred; cranial index.
macrocephaly the condition of having an abnormally large head or cranial capacity. (Cf. microcephaly.)
olfactory nerve either of the first pair of cranial nerves that transmit nerve impulses from the mucous membrane in the nose to the forebrain.
trigeminal nerve either one of the fifth pair of cranial nerves that conduct impulses from the head and face to the brain.
vagus either one of the tenth and longest pair of cranial nerves that innervate the ear, larynx, pharynx, esophagus, heart, lungs, and most abdominal organs.