CELL 



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CELL 



embryonic cell. C, Principal, an adelomorphous 

 cell. C, Prop (of Hensen). See Hensen's Support- 

 ing Cell (Illus. Diet.). C, Prosenchyma. See 

 Prosenchyma (Illus. Diet.). C, Protective. See 

 C, Tegmental. C.s, Pseudoplasma, found by 

 Hodara in normal human spleen and differing from 

 plasma-cells in that they are larger, and possess twisted 

 nuclei which do not present the characteristic chro- 

 matin arrangement. They appear to be a variety of 

 large mononuclear leukocyte, the protoplasm of which 

 has become basophilic. C, Pseudostomatous, the 

 cells of which the exposed ends form pseudostoma (</.v.) 

 (Illus. Diet.). C.s, Psychic, the nerve-cells of the ex- 

 ternal layer of the gray matter of the brain. C, Pul- 

 monary, an air-vesicle of the tissue of the lung. C.s- 

 Purkinje's. See Purkinje (Illus. Diet.). C, Pus-. 

 See Pus-corpuscles (Illus. Diet.). C, Pyramid, C, 

 Pyramidal Ganglion-, C, Pyramidal Nerve-. 

 See Pyramids, Giant (Illus. Diet.). C, Ramified, 

 C, Ramose, one furnished with many processes, par- 

 ticularly those with secondary ramifications. C.s, 

 Ranvier's, connective-tissue corpuscles occurring in 

 tendon. C.s, Rauber's (August). See Layer, 

 Haulier's . C, Renal. See C, Liver. C, Ren- 

 net. See C, Adelomorphous. C, Resting. See Rest- 

 ing-spore (Illus. Diet.). C.s, Rete, those forming the 

 rete mucosum of the skin. C, Ribbed, C, Riff. 

 See Prickle-cell (Illus. Diet. ). C, Rod, C, Rodded. 

 See C, Fibriilated. C.s, Rolando's, the ganglion- 

 cells found in Rolando's gelatinous substance. C, 

 Roof. I. See C, Tegmental. 2. One found on the 

 convexity formed by the junction of the two rows of 

 arches in the organ of Corti. C.s, Sala's, stellate 

 connective-tissue cells found in the network of fibers 

 forming the sensory nerve-endings in the pericardium. 

 C, Salivary, one of those forming the lining of the 

 alveoli of the salivary glands. C, Sarcogenic, an 

 embryonic cell which develops into a muscular fiber. 

 C, Scale. See C, Endothelial (Illus. Diet.). 

 C.s, Scavenger. See Scavenger Cells (Illus. Diet.). 

 C, Sclerenchymatous. See Sclerenchyma (Illus. 

 Diet.). C, Sebaceous, one of the cells of a 

 sebaceous gland. C, Secreting, C, Secretory, one 

 which secretes and throws off secretions. C, Secre- 

 tion, one thrown off with secretions. C, Segmen- 

 tation. See Blastomere (Illus. Diet.). C.s, Sense, 

 C, Sensory, those adapted for the reception and 

 transmission of sensory impressions. C, Sensory 

 Epithelial, modified epithelial cells in an organ of 

 sense connected with the fibrils of the nerves of that 

 organ. C, Sensory Nerve-, a nerve-cell the axis- 

 cylinder process of which is supposed to be continued 

 as a sensory nerve. C, Septate, one with a septum 

 across its lumen. C, Serous Fat-, a fat-cell occur- 

 ring in emaciated individuals, in which the fat is re- 

 duced to a few small globules and in its place there is 

 a pale protoplasm mixed with a mucoid fluid ; the cell 

 is no longer spherical. C.s, Sertoli's. See Sertoli's 

 Cells and Sertoli's Column (Illus. Diet.). C, Sex, C, 

 Sexual, C.| Sexual Reproductive. See Germ-cell 

 (Illus. Diet.). C, Signet-ring. ^Same as C, Fat-. 

 C., Simple, one which has not undergone differ- 

 entiation. C, Sister-, one formed simultaneously 

 with another in the division of a mother-cell. C, 

 Skeletotrophic, one of those forming the skeleto- 

 tropbic tissue of the cat. C, Smooth-muscle. See 

 C. , Muscular -fiber. C, Solitary, one not forming a 

 part of a cell group. C, Sorby Tubercular, for 

 spectroscopic examination of blood. It is a narrow- 

 lumened glass receptacle made of barometer tubing, 

 both ends of which are accurately ground to parallel 

 surfaces, one end being cemented to a small polished 



glass plate. C. -spaces. See Canal, Recklinghausen' s 

 (Illus. Diet.). C, Sperm-. I. A spermatocyte. 

 2. A spermatozoon. C, Spider-. See Deiters' Cell 

 (Illus. Diet.). C, Spindle-, a cell having a fusiform 

 shape. C, Spinous, a prickle-cell. C, Spiral 

 Fiber-, a motor-cell of the heart, first described by 

 Lionel S. Beale (1863), having a spiral fiber coiled 

 around a larger straight one. These separate, after a 

 short distance, proceeding in different directions. The 

 cell constantly disengages the excitation which the 

 spiral fiber transmits to the heart-muscle. Syn., C, 

 Peak's; C, Spiral fiber ganglion. C.s, Splanchnic, 

 those of the splanchnic layer of the mesoderm. C, 

 Staff, one shaped like a rod or staff. C, Starch, 

 one containing starch. C. -stations, cells in the sym- 

 pathetic ganglia around which the nei"ve-fibers arborize. 

 C, Sterile, one occurring in a reproductive organ, but 

 not participating in reproductive processes. C.s, 

 Stilling's, groups of multipolar cells near the gray 

 commissure in the posterior cornua of the cervical and 

 lumbar spinal cord. They correspond to Clarke's vesic- 

 ular column. C, Stilling-Clarke's. See Column, 

 Clarke's Vesicular (Illus. Diet.). C, Stomach. See 

 Pit of the Stomach (2) (Illus. Diet.). C, Stomatic. 

 See Guard-cell (Illus. Diet.). C, Striated Epi- 

 thelial. .See C, Fibriilated. C.s, Stroma, those 

 forming the mass of an organ. C, Suberogenous, 

 a vegetable cell producing cork. C, Suberous, a 

 cork cell. C, Sulfate of Copper, the element of a 

 sulfate-of-copper battery. C, Superadded, a delo- 

 morphous cell. C, Supporting, C, Sustenacular, 

 one which supports or isolates another cell which has a 

 particular function. C, Swarm, a naked ciliated 

 cell. C, Sympathetic, a nerve-cell of the sym- 

 pathetic nervous system as distinguished from one of 

 the cerebrospinal system. C.s, Tactile. See under 

 Tactile (Illus. Diet). C, Tapetal, C, Tapetum, 

 one which forms or aids others in forming an invest- 

 ment over an organ. C, Taste. Same as C, Gus- 

 tatory. C, Tautomeric, a nerve-cell of the gray 

 matter of the spinal cord, the processes of which 

 enter the white matter on the same side of the cord. 

 C, Tegmental, one covering and protecting another 

 cell of special function, as, e. g. , those forming the outer 

 layer of the taste-buds. Syn., C, Cover-. C, Ten- 

 don, a connective-tissue corpuscle occurring in tendon. 

 C. -territory (Virchow), that extent of intercellular 

 substance which is dominated by any given cell. C- 

 theory, the doctrine that cell -formation is the essential 

 biogenetic element. C, Thread. See Nematocyst 

 (Illus. Diet.). C, Tissue. 1. One which is combined 

 with other similar cells in the formation of a tissue. 2. 

 See C, Somatic. C. -tissue, a tissue formed of cells. 

 C, Touch-. See Tactile Cells (Illus. Diet.). C, 

 Transition, one in a state of transition from one well- 

 marked type to another into which it is about to be trans- 

 formed. C, Twin, a single cell resulting from the 

 fusion of two cells. C, Two-fluid, a galvanic ele- 

 ment in which two fluids are used. C, Typical, one 

 retaining its original character more or less closely. C- 

 union, the union of two cells to form one new one. 

 C.| Unipolar, a nerve-cell furnished with a single 

 pole or process. C.s, Unna's. See C, Plasma-. 

 C. t Unstriped Muscle-. See C, Muscular-fiber. 

 C, Vessel-forming. See C, Vast/active (Illus. 

 Diet.). C.s, Vignal's, embryonic connective-tissue 

 (mesenchyniatous) cells lying upon the axis-cylinders 

 of which the fetal nerve-fibers are made up. At fust 

 globular, these cells elongate and gradually fuse until 

 they form a complete sheath around the axis-cylinder. 

 C.s, Virchow's-bone, the cells found in lacunas of 

 bone. C, Vortex, Meyer's term for cortex-cells 



