What's the difference between spicula and spikelet?
Spicula
Definition:
(n.) A little spike; a spikelet.
(n.) A pointed fleshy appendage.
(pl. ) of Spiculum
Example Sentences:
(1) Changes in the significant radiological signs in Crohn's disease, such as spicula, cobblestone pattern, stenoses and fistulas, provide information on the development of the disease and on the effect of treatment.
(2) Most of the usual primary and secondary findings of cancer such as spicula formation, microcalcifications, skin, thickening and nipple retraction were present in these 50 cancer lesions and all of them were recognized in the benign lesions as well, although less frequently.
(3) Such changes include bone lesions larger than 6 cm on the first film with blurred outlines, showing patterns of destruction resembling moth-eaten textiles, the covering periosteum revealing spicula or Codman's triangles.
(4) lobation, spicula, notch, etc, sputum exfoliative cytology, fibrobronchoscopic examination, puncture biopsy of the lung must also be considered in order to ensure early diagnosis.
(5) The existence of cytoplasmic spiculae of exocrinous pancreocytes in the pancreas of different vertebrates allows to consider them as an element of the exocrinous part microcirculatory system.
(6) A reliable diagnosis is possible from the interpretation of these changes, as for instance with spiculae: Very dense and evenly arranged spiculae are only seen in hemolytic anemias and metastases of neurogenic tumors.
(7) It can be generalized, focal, monostotic or polyostotic and shows solid, lamellary or interrrupted spiculae-like reaction.
(8) The potential function of retained osseous spiculae was investigated separately.
(9) Both computer-assisted myelography and magnetic resonance scan showed the spinal cord segmentation and other associated disorders: bone spicula projecting between the 2 cordal halves, vertebral fusion defect and syringomyelic cavity.
(10) Histologically, CB and OB had the same appearance including peripheral spiculae rimmed by swollen blasts.
(11) Histologically there is periosteal thickening with periosteal proliferation of woven bone spiculae and also of myxoid elements of the soft tissue between bone and skin.
(12) Within 48 h the cytoplasm of ciliated cells form long lancet-shaped spiculae with upright walls.
(13) Type III collagen mRNA revealed a considerably different distribution: the highest levels were detected in upper dermis, lower levels were seen in fibroblasts of the periosteum and the fibrous mesenchyme between bone spiculas, and none was seen in osteoblasts.
(14) --C. malayensis is closely related to C. trichysi (the female of the two species are morphologically identical but the two species can be separated by the larger dorsal lobe of the bursa and the longer spicula of C. malayensis).
(15) This new species can be distinguished from S. dipterum (Popova, 1927), S. hoopoe Sharma, 1971 and S. caudatus Quentin and Wertheim, 1975 by its smaller body dimensions, the size of the spicula, the distribution and number of male caudal papillae, and by the morphology of the female posterior end.
(16) The abnormalities concern the formation of spiculae.
(17) length of body, oesophagus, number of stichocytes or length of spicula and vulvar appendage respectively was carried out.
(18) The secretion from A- cells having no contacts with capillaries is released into intercapillary clefts into which the cytoplasmic spiculae of the adjacent exocrinous pancreacytes are turned, capable to overlap them and prevent from the entering of the hormone from the intercellular clefts into the pericapillary gap.
Spikelet
Definition:
(n.) A small or secondary spike; especially, one of the ultimate parts of the in florescence of grasses. See Illust. of Quaking grass.
Example Sentences:
(1) Small transient all-or-none depolarizations (also termed in the literature fast prepotentials, spikelets, pseudospikes, d-spikes, or short latency depolarizations) and their association with lucifer yellow (LY) dye-coupling were analyzed in CA1-CA3 hippocampal pyramidal cells in urethane anesthetized rats.
(2) The isolates were grown on Sabouraud glucose agar for 2 days before being inoculated into boiled spikelets of Axonopus compressus (Gramineae) and then into induction medium (IM).
(3) Spikelets rose from base line as 3-10 mV depolarizing wavelets with a duration between 5 and 10 ms.
(4) The action potentials and the subthreshold spikelets were shown to be Na+ dependent and are presumably generated by a voltage-dependent inactivating Na+ conductance.
(5) Hooked macrohairs on the lemma of the spikelet show that morphological modifications in grasses for dispersal by attachment to the surface of animals were present in the Late Eocene.
(6) flower glume colour, degree of lateral spikelets development, hairy rechis of the ear, were observed in diallel crosses among the varieties Nutans 244, Trumpf, DZ-02389, Hiproly and Brachitic.
(7) Plateau potentials with a high threshold and high-threshold spikelets were Ca2+ dependent and seem to be generated by non-inactivating and possibly inactivating Ca2+ conductances.
(8) Relay cells, on the other hand, were strongly depolarized and fired spikelets at a greatly increased frequency during EOD-interruptions.
(9) It was found that (a) 15 of the 24 LY-injected pyramidal neurons (63%) showed dye-coupling; (b) spontaneous, anti- and orthodromically evoked spikelets (3-7 ms in duration; 3- to 12-mV peak) were recorded in 40 of 95 cells (42%); (c) there was a significantly higher probability of dye-coupled neurons with spikelets and of uncoupled ones without spikelets; (d) spikelet waveform and amplitude were unaffected by spontaneous or imposed polarizations; (e) large hyperpolarizations could reduce the rate and even prevent spikelets; and (f) spikelets could precede or follow spikes, the latter were more frequent with large depolarizations.
(10) Electrophysiological findings, and the association of dye-coupling and spikelets, suggest strongly that at least some spikelets are coupling potentials.
(11) Discovery of a female spikelet of the grass genus Pharus (Gramineae: Bambusoideae: Phareae) in association with mammalian hair in Dominican Republic amber provides the first fossil evidence of epizoochory.