(n.) A cord, baud, or bundle of fibers; esp., one of the small bundles of fibers, of which large nerves are made up; applied also to different bands of white matter in the brain and spinal cord.
(n.) A short cord which connects the embryo of some myriapods with the amnion.
(n.) In Bryozoa, an organ extending back from the stomach. See Bryozoa, and Phylactolema.
Example Sentences:
(1) The first spinal nerve and the spinal accessory nerve (XI) have no sensory projections, but the second spinal nerve has typical projections along the dorsal funiculus of the spinal cord.
(2) This is a decline of 58% from the 2 week level, and the decrease is proportionately similar in the corticospinal area and the dorsal funiculus proper.
(3) The observation of myelinated serotonin-containing axons in the white matter of the monkey dorsolateral funiculus contradicts the view that the descending serotoninergic projection consists entirely of unmyelinated fibers, particularly since the conduction velocity of the fine fibers would be too slow to account for the earliest latency of descending inhibition following stimulation in the brainstem.
(4) FG or WGA-HRP labeled neurons were found mainly in laminae V and VII, in the lateral group of lamina IX, in Clarke's column (CC) and in the dorsal funiculus.
(5) The medullary pyramid (MP) and the ventral funiculus (VF), ipsilateral to the hemispheric lesion, were compared with the MP and VF of the other, unaffected, side.
(6) About 11% of units antidromically activated by ipsilateral dorsolateral funiculus stimulation were depressed by ACh.
(7) Thus, the trajectory of group I fibers was somatotopically organized both in the dorsal funiculus and in the gray matter.
(8) The laminar origin of the ILN and PAG projecting neurons were found primarily in the contralateral reticular portion of V, medial VII and the nucleus of dorsolateral funiculus.
(9) The present finding of contralateral thermosensory deficiencies after lesions of the middle part of the lateral funiculus fits with some of the clinical reports.
(10) However, the [14C]2-deoxyglucose uptake was found to be elevated over the whole extent of the dorsal horns, as well as in the gray matter surrounding the central canal, anterior horns and ipsilateral dorsolateral funiculus.
(11) Of these neurons, 23 were activated antidromically from both the dorsal columns and the ipsilateral dorsolateral funiculus.
(12) Lesions restricted to parts of the ventral lateral funiculus in thoracic or high lumbar segments on the side ipsilateral to the injections produced significant bilateral reductions in labeling.
(13) The spino-olivocerebellar path ascending through the ventral funiculus (VF-SOCP) was investigated in decerebrate cats with the cord transected in the third cervical segment except for the left ventral funiculus.
(14) The neurons were identified antidromically either by stimulation of the hindlimb area in the anterior lobe of the cerebellum (in thalamic cats) or by stimulation of the contralateral ventrolateral funiculus of the spinal cord (in decapitate cats).
(15) It is concluded that an inhibitory pathway, which descends in the dorsal part of the lateral funiculus and which probably originates in the nucleus raphe magnus of the medulla, mediates the descending control found in both morphine and stimulus-produced analgesia.
(16) Finally, microinjections of lidocaine into the ventrolateral funiculus (VLF) or transections of the dorsolateral funiculus (DLF) of the thoracic spinal cord attenuated VAS-produced effects on neuronal responses, but did not affect VAS-induced depressor responses.
(17) Sympathetic discharges, recorded from upper thoracic preganglionic white rami, were evoked by stimulation (0.1 Hz) of descending excitatory pathways in the cervical dorsolateral funiculus (intraspinal) or of adjacent intercostal nerves (spinal reflex).
(18) (2) Consistently, bilateral transection of the lateral funiculus at the level between C5 and C6 abolished stepping movements of both forelimbs.
(19) In vibratome sections, noradrenaline-immunoreactive (NA-IR) axons were seen to invade the spinal cord at E16, at cervical and upper thoracic levels, from the ventral funiculus.
(20) In contrast to a relatively weak excitatory potency on the DSCT neurones (maximum firing frequency did not exceed 130% of the control activated by ipsilateral dorsolateral funiculus stimulation (maximum firing frequency reached 430% of the control level).
Micropyle
Definition:
(n.) An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted.
(n.) An opening in the outer coat of a seed, through which the fecundating pollen enters the ovule.
Example Sentences:
(1) The micropyle canal measures 8 microns at the opening and tapers to 3.6 microns as it penetrates the membrane.
(2) This stain permits pollen tubes to be traced even up to their entry into the micropyle.
(3) The outer layer formed densely accumulated protrusions, whilst the inner layer was smooth and formed a collar structure around the micropyle.
(4) A micropyle and oocyst residuum are absent, but a polar granule is present.
(5) Only unsporulated oocysts were detected in the intestine, and sporulation occurred when feces containing oocysts were incubated for 48 h in seawater at 21 degrees C. Oocysts are elongated (24.8 x 14.7 micron) with a wall about 200 nm thick and have no residuum, micropyle, or polar granule.
(6) Contrary to the widely accepted view that chiton sperm lack acrosomes and that fertilization in this group occurs via a micropyle, we demonstrate here that fertilization in Tonicella lineata occurs by acrosome-mediated sperm-egg fusion.
(7) Sperm from the white sturgeon, Acipenser transmontanus possess an acrosome while the eggs possess numerous micropyles.
(8) were ovoid, 17.6 X 13.6 (16-20 X 11-16) micron; micropyle and oocyst residuum were absent, but a polar body was present.
(9) The plastron region partially encircles the micropyle (anterior end) of the egg and extends along the dorsal surface to the posterior pole; it is delineated laterally by the hatch lines.
(10) Sperm stored in the spermatheca probably is pumped onto the micropyle of the egg during this pause.
(11) are ellipsoidal, 27.3 x 23.6 (22-30 x 20-27) microns; a polar body is present, but no oocyst residuum or micropyle occurs.
(12) The structure of oocysts is described; a peculiar bumpy surface and a calyx-like thickening around the micropyle are illustrated by scanning electron microscopy.
(13) The oocyst wall is smooth, single-layered, with no micropyle.
(14) This indicates a new function for these cells though previously to contribute mainly in the formation of the micropyle.
(15) Neither micropyle, polar granules, nor oocyst residuum were present.
(16) A rapid and steady growth of pollen tubes, their accumulation near the micropyle and penetration in it are observed in self-fertile plants.
(17) After microinjection into fertilized, nonactivated Atlantic salmon eggs via the micropyle, transgenic Atlantic salmon were generated.
(18) are spheroid or subspheroid, 24.6 x 23.5 (21-27 x 20-25) microns, with a shape index of 1.05 (1.0-1.09) but with no micropyle, oocyst residuum, or polar granules.
(19) A micropyle and micropylar cap were observed, but a polar granule and oocyst residuum were absent.
(20) The oocyst wall is a single, colorless layer about 0.6-1.0 microns thick with no striations or micropyle.