fiber

(fiber) [L. i’bra]. An elongated, thread-like structure of organic ti ue. accelerating f’s, nerve-fibers that transmit the impulses that accelerate the heart-beat. acce ory f's, those zonular fibers that are not grouped as chief fibers. anastomosing f’s, anastomotic f’s, fibers extending from one muscle-bundle or nerve-trunk to another. arciform f’s, arcuate f’s, in the cerebrum, a ociating fibers that connect adjacent convolutions; in the cerebellum, similar fibers that connect one lamina with another. a ociation f’s, brain and nerve-fibers that connect different areas of the cerebral cortex and then take part in the a ociation of functions and acts. augmentor f’s. Same as accelerating f’s. axialf., the axis-cylinder of a nerve-fiber. Beale’s f., a spiral nerve-fber. Bergmann’s f’s, proce es which radiate from certain superficial glia cells of the cerebellum and enter the pia. Bernheimer’s f’s, a tract of nerve-fibers of the brain running from the optic tract to Luys’ body. Bogrow’s f’s, nerve-fibers of the cerebrum running from the optic tract to the thalamus. Biihlmann’s f’s, a sct of peculiar lines in carious teeth caused by bacteria. bulbospiral f’s, spiral muscular fibers forming a portion of the musculature of the auricles and ven-. tricles of the heart. Burdach’s f’s, nerve-fibers connected with Burdach’s nucleus. capsular f’s, the nerve-fibers within the internal capsule of the brain. ¢ tic f., the long fiber of chromatin into which the nucleus is resolved during the early stages of karyokinesis and which afterward splits up into the chromosomes. cilio-equatorial f’s, those which pa from the summits of the ciliary proce es to the equator of the lens. commi ural f’s, the nerve-fibers which pa between the cortex of opposite hemispheres of the brain. cone-f’s, the fiber-like extensions of the visual cells on either side of their nuclei which connect the retinal cones with the outer molecular layers of the retina. Corti’s f’s, the rods of Corti. Darks chew its's f's, nervous fibers of the cerebrum running from the optic tract to the habenular ganglion. decu ating f’s, those which cro in the center of the optic commi ure, connecting the retina of each eye with the opposite cerebral hemisphere. dendritic f’s, fibers which pa in a tree-like form from the cortex to the white substance of Schwann. dentinal f’s. Same as Tomes’ fs. depre or f’s, afferent nerve-fibers which, when stimulated, cause diminished tone of the vasoconstrictor center and, therefore, decreased arterial pre ure. Edinger’s f’s, fibers in the cerebrum of amphibia, forming part of the visual paths. elastic f’s, yellowish fibers of elastic quality traversing the intercellular substance of connective ti ue. endogenous f’s, nerve-fibers of the spinal cord which arise from cells outside the cord. exogenous f’s, fibers of the spinal cord which arise from cells situated in the gray matter of the cord. extra ciliary f’s. Sce fleece. geminal] f’s, the pair of fibers formed by division of the pyramidal fibers of the cord, one fiber of each pair continuing on the same side of the cord, and the other pa ing to the opposite side. Gerdy’'s f's, the fibers of the superficial ligament eee - " Π ᾷ ὄ Φ TE 368