What's the difference between pyramid and triangular?

Pyramid


Definition:

  • (n.) A solid body standing on a triangular, square, or polygonal base, and terminating in a point at the top; especially, a structure or edifice of this shape.
  • (n.) A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base.
  • (n.) The game of pool in which the balls are placed in the form of a triangle at spot.

Example Sentences:

  • (1) Immunocytochemical analyses of the hippocampus demonstrated that alpha-amino-3-hydroxy-5-methyl-isoxazole-4-propionate receptor subunits are present in the cell bodies and dendrites of pyramidal cells.
  • (2) To study these changes more thoroughly, specific monoclonal antibodies of the A and B subunits of calcineurin (protein phosphatase 2B) were raised, and regional alterations in the immunoreactivity of calcineurin in the rat hippocampus were investigated after a transient forebrain ischemic insult causing selective and delayed hippocampal CA1 pyramidal cell damage.
  • (3) It is also suggested that degenerative changes occur in the dentate gyrus and may be involved in the delayed neural death of CA1 pyramidal cells.
  • (4) It is concluded that catechol potentiates excitatory transmission at the LOT-superficial pyramidal cell synapse, possibly by increasing evoked transmitter release.
  • (5) The occurrence of paresis or paralysis in ischemic processes strictly situated in the thalamus, however, is discussed: the deficit may be limited to parts of limbs; most often, it is not associated with pyramidal symptomatology; recovery is observed in the hand before the inferior limb.
  • (6) A train of conditioning stimuli to either of the midbrain nuclei produced inhibition of evoked population spikes recorded in the CA1 pyramidal cell layer of the hippocampus.
  • (7) The deficits noted in the granule cells of the dentate gyrus in this study were more severe than those found in our previous studies on the effect of the low protein diet in these same rats on visual cortical pyramidal cells and on the 3 cell types in the nucleus raphe dorsalis and nucleus locus coeruleus.
  • (8) The alterations of dendritic trees of pyramidal neurons of layer III of visual cortex of the rat exposed to the influence of space flight aboard biosputnik "Cosmos-1887" were studied and the results are described to illustrate the methods power.
  • (9) In the perineuronal neuropil of large pyramidal neurons (layers V-VI) there appear symmetric synapses with pyramidal cells, dendritic processes and dendritic spines.
  • (10) One PCR product hybridized to a 4.0 kb RNA concentrated in subpopulations of putative glutamatergic neurons including mitral cells of the olfactory bulb, pyramidal cells of layer V of the cerebral cortex, pyramidal cells of the piriform cortex, and pyramidal cells of field CA3 of the hippocampus.
  • (11) Injections with extensive spread of horseradish peroxidase show that many cells of lamina 4B and the large pyramidal neurons of upper lamina 6 also project extrinsically but their terminal sites have not been identified.
  • (12) The operatory technic used is very classic: septoplasty as the first step, then rhinoplasty by extra mucosal way, with paramedial and lateral osteotomies allowing rebuilding of nasal osseous pyramid.
  • (13) Alzheimer's disease presently is the commonest cause in the developed world, causing a cortical-subcortical degeneration of ascending cholinergic neurons and large pyramidal cells in the cerebral cortex.
  • (14) 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.
  • (15) Thus, hippocampal pyramidal and cortical neurons in both rat and Mongolian gerbil (M. unguiculatus) show abundant lysosomal dense bodies and disorganisation of the protein-synthesising apparatus.
  • (16) In Golgi-Cox-impregnated coronal sections of albino rat brains at 1, 4, 26, 24, 30, 60 and 90 days it is presented the evolution of the spine-less, bare initial zone ("nude zone", NZ) at the proximal apical main dendrites of the layer V pyramidal neurons in the somatosensory and anterior limbie cortex.
  • (17) The developmental pattern of hippocampal mossy fiber (dentate granule cell axon) innervation to the pyramidal cell layer was examined with anterograde transport methods.
  • (18) In the hippocampal slice in vitro, CGP 37849 selectively and reversibly antagonized NMDA-evoked increases in CA1 pyramidal cell firing rate.
  • (19) The pattern of results obtained in the present experiments supports the following conclusions: In old rats, individual Schaffer collateral synapses do not appear to have altered AMPA receptor properties, as neither the mean size of the unitary synaptic response nor the apparent quantal size differs between age groups; however, the data do support the conclusion that there are fewer synapses per Schaffer collateral branch in old versus young CA1 pyramidal cells.
  • (20) A 15-year-old boy presented with progressive pyramidal and extrapyramidal signs, anterior horn cell dysfunction, and behavioral disturbances suggesting a diagnosis of neuronal intranuclear inclusion disease.

Triangular


Definition:

  • (a.) Having three angles; having the form of a triangle.
  • (a.) Oblong or elongated, and having three lateral angles; as, a triangular seed, leaf, or stem.

Example Sentences:

  • (1) Taking into account the calculated volume and considering the triangular image as one face of the particle, it is suggested that eIF-3 has the shape of a flat triangular prism with a height of about 7 nm and the above-mentioned side-lengths.
  • (2) Based on a limited experience we have found that triangular flap ureteroplasty is a worthwhile means of repeat reimplantation of the obstructed ureter and perhaps provides a better alternative than transureteroureterostomy.
  • (3) Pterygia, triangular sheets of fibrovascular tissue that invade the cornea, have recurrence rates of 30% to 50% with currently available surgical procedures.
  • (4) Accurate rotational osteotomy is especially difficult in a triangular bone such as the tibia.
  • (5) Findings at surgery included chondromalacia of the ulnar head (19), tears of the triangular fibrocartilage complex (11), and excessive mobility of the ulnar head (10).
  • (6) Standardized steps or criteria for designing a triangular flap do not always fit for all types of cleft lip repair.
  • (7) The characteristic triangular face, stubby nose, peripheral pulmonic stenosis, a history of prolonged neonatal jaundice and evidence of hepatic parenchymal disease were present as well as bilateral small kidneys and delayed puberty.
  • (8) Each contained four triangular boluses of different widths and of a specific iodine concentration.
  • (9) Dilated, triangular cisterns are often seen at the points of interconnections between longitudinal and transverse elements.
  • (10) We have investigated whether a correlation exists between the quality of graft epithelialisation and three types of suture: triangular sutures, continuous and interrupted sutures.
  • (11) This paper describes the external ear anomalies found in this syndrome: short wide pinnae, often cupped and asymmetrical; distinctive triangular concha; discontinuity between the antihelix and antitragus; and 'snipped-off' portions of the helical folds.
  • (12) The first type included large multipolar neurons with triangular or polygonal perikarya and typically 3-5 dendrites emerging from the poles of each cell.
  • (13) Transverse loading tests demonstrated that the triangular fibrocartilage is less stiff in neutral forearm rotation.
  • (14) Silver-Russell's syndrome is a condition characterized by pre- and postnatal growth retardation, a triangular face, clinodactyly of the 5th finger, café au lait patches and hemihypertrophy.
  • (15) Analytic, functional and traumatological study of the medial compartment of the wrist, showing the role of cohesion of the triangular ligament and its radialis and ulnaris fibrous expensions.
  • (16) England had started with some well-executed set piece moves, a triangular formation in midfield initially foxing Australia, but it was the Wallabies’ ability to react in open play that marked them out: Foley’s first try, after Israel Folau, otherwise subdued on the night, ran through Robshaw, came after he noticed Ben Youngs had drifted too wide and cut inside the scrum-half and Joe Launchbury before wrongfooting Brown.
  • (17) Similar to previous cases in the literature this girl presented with proportionate intrauterine and postnatal growth retardation, normocephaly, triangular face with bulbous nose, long eyelashes, short upper lip, small vermilion border of upper lip, dorsally rotated ears, deep nuchal hair line, hirsutism, and clinodactyly of little fingers.
  • (18) While the arteries show a long stretched spinle or lancet like form they change over blunt, oval, triangular or rhomboid forms into polygonal cells with spiked border lines at the venules.
  • (19) The histological examination and microangiogram after combined coaxial exposure of CO2 and Nd: YAG lasers revealed triangular avascular or oligovascular zones in the edematous tissue, in which the surviving vessels were narrowed.
  • (20) It is concluded that the physical performance of sedentary people, athletes and patients with impaired cardio-pulmonary function can be more precisely qualified in quantitative terms by means of computer assisted rectangular-triangular ergospirometry.