GLOSSARY. 251 



Mi'tral (Lat. ntitra, a head-band). The name of the valve between the left 

 auricle and ventricle of the heart, which has two flaps, like the mitre of a 

 bishop. 



Mo'lar (Lat. mola, a well). The name of the grinding-teeth. 



Mo' tor (Lat. tnovere, to move). Concerned in producing movement. 



Mu'cus (Lat. mucus, the secretion of the nose). A viscid liquid secreted by cer- 

 tain membranes within the body, named mucous membranes. 



Nar-cdt'ic (Gr. narkotikos, from narke, numbness). Any substance which dulls 

 the sensibility of the nerves, and in larger doses produces unnatural sleep. 



Nd'sal (Lat. nasus, the nose). Pertaining to the nose; the name of the bones 

 which support the bridge of the nose. 



O-d6n'toid(Gr. odontos, of a tooth; eidos, shape). The name of the bony peg of 

 the second vertebra, around which the first turns. 



(E-sdpk'a-gus (Gr. cesophagos). The gullet. The tube which conveys food from 

 the throat to the stomach. 



Ol-fdc'to-ry (Lat. olfacere, to smell). Pertaining to the sense of smell. 



^Op'tic. Pertaining or related to the sense of sight. 



Or'gan (Lat. organunt, an instrument or implement). A portion of the body hav- 

 ing some special function or duty. 



Pdl-pi-td'tion (Lat. pnlpitatio, a frequent or throbbing motion). A violent and 

 irregular beating of the heart. 



Pdn'cre-as (Gr.pan,a\\\ kreas, flesh). One of the most important glands which 

 aid in the digestion of food. It is placed in the abdomen, just below the stomach, 

 and pours its secretion into the upper end of the small intestine. 



Pa-pil'la (Lat. a nipple or teat). The name of the small elevations found on the 

 skin and mucous membranes. 



Pa-rdl'y-sis (Gr. paraluein, to set free or separate). Loss of function, especially 

 of motion or feeling. Palsy. 



Pa-ri'e-tal (Lat. paries, the wall of a house). The name of the bones on the top 

 of the skull. 



Pa-tel'la (Lat.). The knee-cap or knee-pan. 



P&l'vis (Lat. a basin). The bony ring, made of sacrum, coccyx, and the two hip- 

 bones, which surrounds the lower part of the abdomen. 



Per-i-cdr' di-unt (Gr. peri, around; kardia, the heart). The membranous sac which 

 encloses the heart. 



Per-i-ds' te-um (Gr. peri, around; esteon, a bone). A fibrous membrane which sur- 

 rounds the bones. 



Pha-ldn'ges (Gr. phalanx, a body of soldiers closely arranged in ranks and files). 

 The bones of the fingers and toes. 



Phdr'ynx (Gr. the throat). The cavity into which the nose and mouth open, and 

 from which the gullet proceeds. 



Phys-i-ol'o-gy (Gr. physis, nature; logos, a discourse). The science which treats of 

 the functions or uses of the different parts of animals and plants. 



Plds'nta (Gr. anything formed or moulded). The liquid part of the blood. 



Pul'mo-na-ry (Lat. pulmonis, of a lung). Pertaining to the lungs. 



Py-lo'rus (Gr.pyloros, a door-keeper). The opening from the stomach into the 

 small intestine. 



Rd'di-us (Lat.). The outer of the two bones running from the elbow to the wrist. 

 Re' flex (Lat. reflexus, turned back). The name given to involuntary movements 



produced by an excitation travelling along a sensory to a centre, where it is 



turned back or reflected along motor nerves. 



