134 Glossary 



Du'rus, -ra, -rum. [L.] Hard or tough. 



Ec'toderm. [G. ektos, outside ; derma, skin.] The outer layer of cells (in the blas- 



tula, etc.). 

 En'doderm; also written Entoderm. [G. endon, inside; derma, skin.] The inside 



or lining layer of cells (of the blastula, etc.). 

 En"terocep'tors. [Bastard term, fr. G. entera, intestines; L. capere, to take, re- 

 ceive.] Visceral receptors. 

 Enter'ic. [L. enter'icus, fr. G. entera, intestines.] Intestinal. 

 En'zyme. [G. en, in ; zyme, leaven.] A substance, such as diastase, which has the 



yeast-like power of digesting other substances. 

 Ex"terocep'tors. [L. exterius, outer ; capere, to take, receive.] Receptors for stimuli 



from outside the body. 

 Epine'phrin. [G. epi, upon ; nephros, kidney.] Adrenalin. 



Epithe'lium. [G. epi, upon ; thele, nipple, teat.] The term originally applied to the 

 membrane covering the lips; later extended to the coverings of surfaces gen- 

 erally. 

 Epineu'rium. [G. epi, upon ; neuron, nerve.] The connective tissue membrane sur- 

 rounding the larger bundles (fascia) of nerve fibers. 

 Er'igens. [L.] Producing erection. 

 Esoph'agus. [G, oisophagos, fr. phagein, to eat.] The gullet, or food passage from 



mouth to stomach. 

 Esophag'eal. 

 Fasc'ia (fash'i-a). [L., a band or girdle.] The sheets of connective tissue lying over 



the muscles. 

 Fascic'ulus, -uli. [L., a small bundle.] Fascicle. The bundle next in size to the 



total nerve, muscle, etc. 

 Fi'bril. [L., fibra, a fiber.] The filaments distinguishable within the fibers of nerve 



or muscle. 

 Fis'tula. [L., a tube or pipe.] An opening, not normal, into some cavity or organ. 

 Fo'liate. [L. folia' tus.'] Having the form of a leaf. 

 Fora'men, -mina. [L., a hole.] An opening, orifice, or short passage. 

 Fo'vea, -veae (improperly, fove'a). [L., a small pit.] A pit or depression in a 



surface. 

 Fundus. [L., the bottom or base.] The depths, lower part, or larger part, of any 



organ. 

 Fronta'lis. [L. frons, the forehead.] Frontal ; pertaining to the forehead. 

 Fun'giform, [L. fungus, a mushroom ; forma, form.] Having a head or top larger 



than the base. 

 Funic'ulus, -uli. [L., a small rope.] One of the smaller bundles of fibers, making 



up a nerve or muscle ; ;'. e., a bundle within a fasciculus ; also, any fiber-bundle. 

 Gang'lion. [G, a knot ; a swelling or tumor under the skin.] Primarily, an enlarge- 

 ment in the course of a nerve, containing cell bodies; hence any group of nerve 

 cell bodies outside of the brain and cord. 

 Gas'tric. [G. gaster, the belly, stomach.] Pertaining to the stomach. 

 Ger"minati'vum. [L., fr. germen, to sprout.] Ger'minative ; capable of producing 



new tissue. 

 Genic'ulate. [L. genie" ula' turn, -ta, from geniculare, to bend the knee.] Having the 



form of a bent knee, or having- a knee-like protuberance. 

 Gen'ital. [L. genitalis, fr. gignere, to beget.] Pertaining to reproduction or sex. 



