GLOSSARY. 



315 



Ptyalin, TTTUW I spit ; the active 

 principle contained in saliva. 



Pulmonary, pulmo a lung, belong- 

 ing to the lungs. 



Pus, matter from a sore. 



Pylorus, 7ru/\oujoos ('TruXi'i ovpos] a 

 gate-keeper ; the opening from 

 the stomach into the intestine, 

 or, more properly, the struc- 

 tures surrounding the opening. 



Eadius, a ray or spoke ; the outer 

 bone of the fore-arm. 



Receptaculum chyli, receptacle of 

 chyle ; the dilated commence- 

 ment of the thoracic duct. 



Kectum, for intestinum rectum 

 straight gut ; the last part of 

 the bowel. In many mammal's 

 it passes backwards in a straight 

 course from a position well for- 

 ward in the abdomen ; but it is 

 by no means straight in the 

 human subject. 



Renal, ren a kidney, belonging to 

 the kidney. 



Eestiform, restis a rope ; the name 

 of the tracts of fibres of the 

 medulla oblongata, which pass 

 into the cerebellum ; they have 

 slightly spiral marks, like a rope, 

 on the surface. 



Reticular, rete a net; in meshes; 

 as is the matrix of reticular car- 

 tilage. 



Reticulum, a little net; the name 

 given to the web of delicate con- 

 nective tissue between the ner- 

 vous elements in the spinal 

 cord and some parts of the 

 brain. 



Rete mirabile, wonderful net; a 

 number of branches, derived 

 from the breaking up of one or 

 more arteries, and uniting again 

 into larger trunks. 



Rete mucosum, mucous net; a 

 name for the deep and soft part 

 of the cuticle. 



Rigor mortis, rigidity of death. 



Rima glottidis, fissure of the glot- 

 tis. 



Sacrum, sacred; the bone which 

 forms the part of the vertebral 



column succeeding the lumbar 

 vertebrae, and articulating with 

 the pelvic bones ; an object of 

 superstitious regard, probably 

 on account of its triangular 

 shape. 



Sarcolemma, <rcip% flesh, and Xe>- 

 /* a husk ; the membrane which 

 surrounds the contractile sub- 

 stance of a striped muscular 

 fibre. 



Scala, a ladder or staircase. The 

 scala tympani and scala vesti- 

 buli are the two passages filled 

 W 7 ith perilymph in the cochlea. 



Scaphoid, <rKa<pri a hollow vessel 

 or boat, and el<5os form; the 

 name of one of the carpal and 

 one of the tarsal bones. 



Scapula, the shoulder-blade. 



Sclerotic, o-/cX?jpos hard; the tough 

 coat of the eye ball, which, with 

 the cornea, forms its outer wall. 



Sebaceous, sebum tallow ; seba- 

 ceous glands, those which se- 

 crete the oil of the skin. 



Semilunar, semilunaris half -moon 

 shaped; the name of a carpal 

 bone. 



Sensorium, sentio I perceive by 

 the senses ; the nervous centre 

 which must be reached by sen- 

 sory impressions before they can 

 be perceived. 



Sequestrum, sequestra I set aside ; 

 a dead portion of bone separated 

 or destined to separate from the 

 living parts. 



Serum, whey; the fluid part of 

 the blood, separated from the 

 fibrin and corpuscles ; serous 

 membrane, a membrane form- 

 ing a shut sac, and secreting 

 serum or fluid sufficient to lub- 

 ricate its opposed surfaces. 



Sesamoid, (niaa/mov a kind of seed, 

 and et<5os form; seed-like. Sesa- 

 moid bones are those like seeds 

 in tendons. 



Sigmoid, 2 and ttoos form; shaped 

 like an S, as the sigmoid flexure 

 of the intestine. 



Sinus, a hollow. Osseous sinuses 

 are hollows in bones, filled with 

 air, as the frontal sinus. The 



