A group of sensory organs around the mouth opening (excluding amphids which are situated on the lateral aspects of the mouth); the number and arrangement of the cephalic papillae are significant for the classification of nematodes.
A group of sensory organs at the posterior end of some male nematodes (excluding “phasmids” which are situated on the lateral aspects of the tip of the tail); the number and arrangement of caudal papillae are used for identification of nematodes such as in Ascarididae and Thelaziidae.... caudal papillae
a measure of the shape of a skull, commonly used in *craniometry: the ratio of the greatest breadth, multiplied by 100, to the greatest length of the skull. See also brachycephaly; dolichocephaly.... cephalic index
(external cephalic version) a procedure in which a fetus that is lying in the breech position is turned so that its head will enter the birth canal first. It may give rise to complications (e.g. abruptio placentae) and is therefore only carried out in selected cases.... cephalic version
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