GLOSSARY 435 



ureter which surround and collect the urine from the papilla of the 

 kidney. 



Canaliculus. (From the Latin word canaliculus, "a small channel or 

 canal.") Any one of the minute canals opening into the lacunae 

 (lakes) of bones. 



Cancellous. (From the Latin word cancelli, "lattice-work.") Re- 

 sembling lattice-work, as the tissue in the articular ends of long bones. 



Capillary. (From the Latin word capillus, "a hair.") Hair-like. 

 A minute bloodvessel connecting the arterioles and venules. 



Capitellum. (Dim. of the Latin word caput, "a head.") A small 

 head. 



Carbon Dioxide. An acid, gaseous product having the composition 

 of one atom of carbon to two of oxygen (CO 2 ). It is formed in the 

 tissues as a result of metabolism. When inhaled or accumulated 

 in the tissues in excess it will destroy animal life by asphyxiation. It 

 kills by depressing the respiratory centre. 



Cardiac. Pertaining to the heart or the cardia of the stomach. 



Carpus. The wrist. Eight bones collectively form it. 



Cava Vena. (From the Latin words cavus, "a hollow;" vena, 

 "a vein.") The large veins which open and empty venous blood 

 into the right auricle of the heart from the systemic veins. 



Cavernous (sinus). (Caverna, a cave.) Having hollow spaces. 

 The venous sinus at the sides of the body of the sphenoid bone. It 

 lodges the carotid artery and its sheatji, and nerves to the eye muscles. 



Celiac. Pertaining to the belly. 



Cellular. (From the Latin word cella, "a cell.") Pertaining to or 

 composed of cells. 



Centrifugal. (From the Latin words centrum, "to centre;" fugere, 

 to fly.") Receding from the centre to the periphery. C. nerve: One 

 which conducts impulses from the brain and spinal cord to the periphery. 



Centripetal. (From the Latin word centrum, "centre;" petere, 

 "to seek.") Traveling from the periphery toward the centre. C. 

 nerve: One which conveys impulses from the periphery toward the 

 brain and spinal cord. 



Cephalic. Pertaining to the head. 



Cerebellar. (Dim. of cerebrum.) Pertaining to the cerebellum. 



Cerebellum. (Dim. of cerebrum.) The lower part of the brain 

 lying below the cerebrum and above the pons and medulla. 



Cerebral. Pertaining to the cerebrum. 



Cerebrum. (From the Latin word cerebrum, "brain.") The chief 

 portion of the brain. 



Cervical. (From the Latin word cervix, "a neck.") Pertaining 

 to the neck of the body, organ, etc. 



Cervix. A neck, or constricted portion. 



Chemic or Chemical. Of or pertaining to chemistry. 



Chiasm (optic). (From the Greek meaning "to make a cross, as 

 an X.") The optic commissure, where the fibers of the optic nerves 

 meet and cross to pass to the optic tracts. 



Chondroblast. A cell of developing cartilage. 



Chordae Tendinese. Tendinous strings, which are attached by 

 their two ends to the papillary muscles and margins of the auriculo- 

 ventricular valves in the ventricles of the heart. 



