GLOSSARY. 33 



Corpus'cula (L. little bodies). Small bodies found in the 



embryo sac of coniferous trees, and which correspond to 



the archegonia of ferns. 

 Corpus'cula tac'tus (L. little touch bodies). Small oval 



bodies found in those parts of the skin which are most 



sensitive to touch. 

 Cor'tex (L. bark). The bark of trees. The outer part of an 



organ. 

 Cor'tical (L. cortex, bark). Relating to the bark. Applied to 



the outer portion of an organ or organism. 

 Cos'tal (L. costa, a rib). Relating to the ribs. Costal 



respiration is that part of the respiratory function which is 



performed by the movements of the ribs. 

 Cotyle'don (Gr. kotuledon, a cup-shaped hollow). The 



temporary seed-leaf of an embryo plant. Applied also to 



each of the bunches of foetal villi which occur in the 



placentae of some mammals. 

 Cotyld'phora (Gr. kotulos, a cup; phoreo, I bear). A group of 



Ruminants, the placenta of which exhibits cotyledons. 

 Cox'a (L. the hip). The basal joint of the leg in insects 

 Coxo'cerite (L. coxa, the hip; Gr. keras, a horn). The basal 



joint of the antennae in the Crustacea. 

 Coxo'podite (L. coxa, the hip; Gr. pous, podos, a foot). The 



proximal joint of the typical limb of a Crustacean. 

 Cra'nium (Gr. kranion, the skull). The skull, brain-case. 

 Cras'peda (Gr. kraspecton, a border or edge). The convoluted 



cords attached to the mesenteries in the Actinozoa. 

 Crassamen'tum (L. crassus, thick). The solid clot of a 



coagulated material. 

 Cremas'ter (Gr. kremao, I suspend). A muscle of the abdomen 



found only in the male, and which supports the testicle. 

 Crib'riform (L. cribrum, a sieve \forma, shape). Sieve-like. 



Applied to that portion of the ethmoid bone through the 



perforations of which the fibres of the olfactory nerves 



pass to the nasal cavities. 

 Cri'co-arytenoi'dei latera'les (L. lateral crico-arytenoidX A pair 



of muscles which by their contraction close the glottis. 

 Cri'co-arytenoi'dei posti'ci (L. posterior crico-arytenoid). A pair 



of muscles which by their contraction dilate the glottis. 

 X/fi'co-thyroi'dei (L. crico-thyroid). A pair of muschs which by 



their contraction stretch the vocal cords. 

 Cri'coid (Gr. krikos, a ring; eidos, form). The ring-like 



cartilage of the larynx. 



