434 GLOSSARY 



Auriculo ventricular. (From the Latin words auricula, "ear;" ven- 

 triculus, "ventricle.") Relating to an auricle and ventricle of the 

 In-art. 



Axial. (From the Latin word axis, see Axis.) Pertaining to the 

 centre or situated in an axis. 



Axilla. The arm-pit. 



Axillary. Pertaining to the axilla. 



Axis. (From the Latin word axis, "an axletree.") An imaginary 

 line passing through the centre of a body. The second cervical ver- 

 tebra Arterial axis: A short artery which breaks up into several 

 branches. 



Axone or Axis-cylinder. (From the Latin axis, "an axletree.") The 

 essential part of a nerve cell which conducts nerve impulses. 



Basilar. Pertaining to the base. 



Basib'c (vein). (From the Greek meaning royal.) Eminent, illus- 

 trious. The large vein on the inner side of the arm. 



Biceps (muscle). (From the Latin words bis, "twice;" caput, 

 "head.") Having two heads. 



Brachialis Anticus (muscle). In front of the arm. 



Brachiocephalic (artery and vein). Pertaining to the arm and 

 head. 



Bronchial. Relating to the bronchus. 



Bronchiole. (Dim. of bronchus.) One of the smallest subdivisions 

 of a bronchus. 



Bronchus (pi. i). (From the Greek meaning windpipe.) One of 

 the primary divisions of the trachea. 



Buccal. (From the Latin word bucca, "cheek.") Pertaining to 

 the cheek. 



Buccinator (muscle). From the Latin word buccinare, "to blow 

 the trumpet.") So called from its use in blowing the trumpet, etc. 



Bursa. (From the Latin word "purse.") A small sac interposed 

 between parts that move upon one another. 



Bursal. Pertaining to bursa. 



Bifid. (From the Latin words bis, "twice;" findere, "to cleave.") 

 Divided into two parts. 



Bipolar. (From the Latin words bi, "two;" polus, a "pole"). 

 Having two poles. Nerve cells having two prolongations of their 

 cell matter are termed bipolar. 



Blastodermic Vesicle. Pertains to the blastoderm. (The germinal 

 membrane formed by the cells of the morula or mulberry mass, lying 

 on the internal surface of the vitelline membrane of the impregnated 

 ovum.) 



Blastula. The blastodermic vesicle. 



Br actual (artery). (From the Latin word brachium, "arm.") Per- 

 taining to the arm. B. artery: continuation of the axillary artery in 

 the arm. 



Brachium. (From the Latin word brachium, "arm.") The arm, 

 from the shoulder to elbow. 



Calcaneum (bone). (From the Latin word calx, "a heel.") The 

 bone of the heel, also os calcis. 



Calices (pi. of Calix). (From the Latin word calix, "a cup or 

 chalice.") Cup-like depressions of the membrane of the pelvis of the 



