88 GLOSSARY. 
of the caudal vertebre enclosing the posterior 
portion of the aorta, present in certain 
Vertebrata. 
Chondro-cranium (Gr. chondros, gristle ; kranion, 
skull)—The cartilaginous skull of certain 
lower vertebrates, the embryonic skull of 
higher vertebrates. 
Clavicle ) (L. clavicula, a small key).—The collar- 
Clavicular § bone. So-called from its supposed 
resemblance to an ancient key. 
Clinoid processes (Gr. kine, a bed; ezdos, shape).— 
Processes of the body of the sphenoid bone. 
Cnemial crest (Gr. £xeme, leg).—A prominent ridge 
of bone on the proximal end of the tibia. 
Coaptation (L. con, together ; apo, I fit)—-Applied 
to the movement of joints where the articular 
surface of one bone travels over that of 
another, as the patella on the femur. 
Coceygeal (L. coccyx, the cuckoo).—Relating to the 
COCCYX. 
Coceyx.—A term applied to the four terminal vertebrz 
of man, which unite and form a structure 
which somewhat resembles a cuckoo’s beak. 
Cochlea (L. a snail’s shell)—The interior division of 
the internal ear. 
Condyle (Gr. kondulos, a knuckle)—The articular 
surface of a bone. 
Condyles.—The articular surfaces of the ex-occipital 
bones which articulate with the vertebral 
column. 
