GLOSSARY. l8l 



Osmazo'me (Gr. osme, odour; zomeno, to give savour to). 



An extractive of meat, which gives it its characteristic 



flavour. 



Ox'yhzemoglo'bin. Haemoglobin as found in arterial blood. 

 Oxyn'tic cells (Gr. oxus, sharp or acid). The parietal, 



delomorphous, marginal or acid secreting cells, found in 



cardiac glands of stomach. 



Pacini's corpuscles. A special variety of sensory nerve 

 endings occurring in pulp of finger-tips, &c. 



Paroo'phoron (Gr.para, beside ; don, egg ; phero, I bear). 

 Tubular portion of Wolfifian body. That portion of ovary 

 known as the tissue of the hilum. 



Periodon'tal membrane (Gr. peri, around ; odons, a tooth). 

 The periosteum of the alveolus or socket in which 

 tooth is embedded. 



Phag'ocyte (Gr. phagas, a glutton ; kutos, a cell). A form of 

 leucocyte which is present during active tissue absorp- 

 tion. 



Pha'koscope (Gr. phakos, a lentil ; skopeo, I see). An instru- 

 ment for demonstrating variation in curvature of the 

 refracting surfaces of eye during accommodation. 



Photophobia (Gr. phos, light ; phobeo, I dread). Intolerance 

 of light. 



Physostig'min. Eserine, the alkaloid of Calabar bean. 



Pine'al eye. A third eye, corresponding with the interocular 

 spot in lizards; which consists of vestigial ocular 

 elements, connected with pineal gland. 



Plethys'mograph (Gr. pletho, to be full ; grapho, I write). 

 An instrument for recording variations in the blood- 

 supply to a structure. 



Poikilother'mal (Gr. poikilos, varied; pous, a foot). Cold- 

 blooded animals, whose temperature varies with that of 

 the surrounding media. 



Polar globules. Bodies in the ovum which indicate the 

 point at which yolk cleavage commences. 



Porret's phenomenon. During passage of galvanic current 

 fresh muscle fibre swells at negative pole. 



Pouch of Rathke. A space found in vault of pharynx. 



Pressor nerves (L. primo, to press). Those nerves which 

 when stimulated, reflexly excite vaso-motor centres, 

 causing contraction of arteries. Excito-vaso-motor. 



