Den' tal (_dens, dentis_, a tooth). Di' a phragm (-fram). The muscle dividing the abdomen from the chest. Di as' to le (_diastello_, I put asunder). Dilation of the heart. Dis' lo ca' tion. A putting out of joint. Dor' sal (_dorsum_, the back). Duct. A small tube. Du o de' num (_duodeni_, twelve each). Du' ra Ma' ter (_durus_, hard; _mater_, mother). The outer membrane of the brain. Dys pep' si a is a difficulty of digestion E lim' i nate. To expel. Ep' idem' ic. A disease affecting a great number of persons at once. Ep' i der' mis. The cuticle. Ep' i glot' tis (_epi_, upon; _glottis_, the tongue). The lid of the windpipe. Ep' i the' li um. The outer surface of mucous or serous membranes. Eu sta' chi an (u-sta'-ki-an) Tube. So named from its discoverer, an Italian physician. Ex cre' tion. Waste particles thrown off by the excretory organs. Fer' men ta' tion. The process by which sugar is turned into alcohol. Fi' brin (_fibra_, a fiber). Fil' a ment (_filum_, a thread). Func' tion. See Organ. Gan' gli on (gang'-gli-on). From _ganglion_, a knot; plu. ganglia. Gas' tric (_gaster_, stomach). Glands (_glandz_). From _glans_, a Latin word meaning acorn. Their object, is to secrete in their cells some liquid from the blood. Glot' tis. The opening at the top of the larynx. Hu' me rus. The arm bone. Hu' mor. A Latin word meaning moisture. Hy' dro gen. The lightest gas known, and one of the elements of water. Hy' gi ene. From a Greek word meaning health. Hyp' o glos' sal. Literally "under the tongue"; a nerve of the tongue. In ci' sor (_incido_, I cut) teeth are cutting teeth. In' spi ra' tion (_in_ and _spiro_, I breathe in). In tes' tine (-tin). From _intus_, within. Lach' ry mal (_lachryma_, a tear). Pertaining to tears. Lac' te al (_lac_, _lactis_, milk). So called from the milky look of the chyle during digestion. La cu' na, plu. lacunæ (_lakos_, a hole). Cavities in the bone structure. Lar' ynx (lar'-inx). The upper part of the windpipe. Lig' a ments (_ligo_, I bind) tie bones together. Lu' bri cate. To oil in order to prevent friction. Lum' bar (_lumbus_, a loin). Pertaining to the loins. Lymph (limf). From _lympha_, pure water. Lym phat' ic (lim-fat-ik). Mas' ti ca' tion. The act of chewing. Me dul' la Ob lon ga' ta. The upper part of the spinal cord. Mam' brane. A thin skin, or tissue. Mes' en tery. The membrane by which the intestines are fastened to the spine. Met' a car' pal (_meta_, after; _karpos_, wrist). Met' a tar' sal (_meta_, after; _tarsos_, the instep). Mi' cro scope (_mikros_, small; _skopeo_, I see). Mo'lar (_mola_, a mill) teeth are the grinders. Morp' hine (_Morpheus_, the Greek god of sleep). Mo' tor. Giving motion. Mu' cous (-kus) Membrane. A thin tissue, or skin, covering the open cavities of the body. See Serous. Mu' cous. A fluid secreted by a membrane and serving to lubricate it. Mus' cle (mus-l). A bundle of fibers covered by a membrane.