264 ELEMENTS OF MAMMALIAN ANATOMY 



Quad' ri ceps {quadri, four; caput, head). 



Quad ri gem' i na: plural of quatlrij^cminum. 



Quad ri gem' i num (quaJri, four; gcminus, twin born): part of the brain. 



Ra' mi: plural of ramus. 

 Ra' mus : the branch of an organ. 



Rec' ti grade: where weight of foot rests on large pad; as in elephant. 

 Rec' tus: straight. 

 Rhin' al: pertaining to the nose. 

 Ro Ian' do : an anatomist. 

 Ro tun' dum: round. 



Ru' mi nant [niniiuarc, to chew the cud): any of the ungulates which chew the 

 cud. 



Sa' crum {sacer, sacred) : the part of the backbone between the coxal bones. 

 Sag' it tal {sagitlii, an arrow) : a name given to a vertical longitudinal plane of the 



body. 

 Sal ta tor' i al : leaping. 



Scaph' oid {skapha, a boat) : a bone in the wrist and also the ankle. 

 Sci at' ic {si at' ic) : relating to structures in the region of the ischium. 

 Scle rot' ic (skleros, hard): relating to the outer coat of the eye. 

 Se ba' ce ous (sebum, suet or fat) : the name of glands in the skin. 

 Sec to' ri al (stcare, to cut) : the carnassial or last premolar tooth in many of the 



carnivora. 

 Sem i lu' nar (semi, half; luna, moon). 



Semi plan' ti grade : where half the sole rests upon the ground; fore-foot of bear. 

 Ses'amoid (sesamo?!, a grain: oid, like): the name of small bones developed in 



tendons. 

 Sig' moid: shaped like the Greek letter sigma. 

 Si' nus (sinus, a hollow): a cavity or channel. 

 So' le us (flat): a muscle of the calf of the leg. 



Sper mat' ic (sperma, seed) : pertaining to the reproductive fluid called semen. 

 Sper ma to zo' a (sperma, seed; zoa, animals): plural of spermatozoon. 

 Sper ma to zo' on : the male reproductive cell developed in the testis. 

 Sphen' oid: (sphen, wedge: oid, like): as the sphenoid bone. 

 Sphinc' ter (to squeeze) : the name of a muscle surrounding and capable of closing 



an orifice. 

 Splanch' nic : pertaining to the viscera. 

 Sub: a common prefix denoting under or beneath. 

 Sty' loid (stylos, a pillar). 

 Sudoriferous (sudor, sweat). 

 Sudoriparous (sudor, sweat; parcrc, to produce): secreting sweat. 



