What's the difference between frond and rachis?

Frond


Definition:

  • (n.) The organ formed by the combination or union into one body of stem and leaf, and often bearing the fructification; as, the frond of a fern or of a lichen or seaweed; also, the peculiar leaf of a palm tree.

Example Sentences:

  • (1) Ependymal cells developed luminal fronds that projected into the ventricle and the subpial glia displayed a very subtle gliosis in the form of thin multi-laminated processes.
  • (2) BPV-4 DNA was present in the residual papillomatous fronds of the renal cancer, but was absent from the carcinoma proper and for the splenic metastasis.
  • (3) Having reviewed 47 cases of vascular malformations of the stomach and duodenum, we propose an endoscopic classification for these lesions: Pattern I (flat or slightly protruded, bright red lesions with frond-like margin) is the most usual form of presentation.
  • (4) Carbon dioxide laser photocautery was used successfully intraocularly in human patients to seal fibrovascular fronds and retinal tears at the time of vitrectomy.
  • (5) "Fronds," characterized by contrast within the interstices of the lesion, were seen in three malignant lesions.
  • (6) Posterior or to this frond of neovascularization, intertwining intraretinal telangiectasia was observed.
  • (7) At its margin abutting the central fibrous body the atrioventricular (A-V) node exhibited numerous fronds and outcroppings, some forming loop connections from one part of A-V node to another.
  • (8) The stems of corn, millet, sugar cane and the banana leaf frond excite some clinical and pathological effects in the rabbit's eye when implanted either into the anterior chamber (AC) or subconjunctivally.
  • (9) Substance P was most abundant in the subintimal portion of the membrane, with occasional filaments coursing via synovial fronds to the intimal portion.
  • (10) Palm tree climbers use jigs which are woven from palm fronds.
  • (11) Management depends on a high degree of suspicion, and a sonogram is useful to visualize the papillary fronds in the cysts.
  • (12) Photograph: Phil Gates I turned over a frond and saw the long, slit-like rows of spores, then searched under a rocky overhang for signs of germination.
  • (13) There is then no further increase in frond number for 3 to 4 weeks, although DNA, RNA and protein synthesis continue at decreased rates and starch accumulates in the plants.
  • (14) Bacteria-free cultures of Spirodela oligorrhiza continue to increase in frond number for 2 to 3 days after transfer to darkness.
  • (15) Four argon laser techniques have been evaluated in the eradication of diabetic disk neovascularization: focal (nonfeeder) photocoagulation, feeder-frond photocoagulation alone, panretinal photocoagulation alone, and feeder-frond treatment combined with panretinal photocoagulation.
  • (16) During the day, under leafy huts, women learned to weave pandanus fronds and men crafted didgeridoos.
  • (17) A fluorescein-angiography displayed six years after the trauma a large neovascular frond and intraretinal neovascular network.
  • (18) However, only five of these were easily detectable in steady-state mRNA isolated from roots of the same plants, and the relative expression of each gene varied between the roots and the fronds.
  • (19) Amongst the other 10 women there were intratubal adhesions (n = 2), fronds attached to mucosal folds (n = 4), irregular blood vessels in mucosal folds (n = 2), unusual mucosal folds (n = 3) and black 'spots' within mucosal folds (n = 3).
  • (20) Thrombosis was associated with a delay in the growth and maturation of NV fronds, which resumed after reperfusion.

Rachis


Definition:

  • (n.) The spine; the vertebral column.
  • (n.) Same as Rhachis.

Example Sentences:

  • (1) In May 1983, a thorough workup revealed an incomplete fracture of the first lumbar vertebra and a diffuse demineralization of the rachis and pelvis.
  • (2) Oogonia detach from the short rachis and increase in size from 6 to 60 microns; accumulating hyaline granules, shell granules and glycogen.
  • (3) It is conventional saying that the fetal rachis shows only one ventral concavity.
  • (4) Antho-RFamide (pGlu-Gly-Arg-Phe-amide), a neuropeptide recently isolated from the sea pansy Renilla köllikeri induced sustained (tonic) contractions in the rachis and peduncle of the colony, and in the individual autozooid polyps.
  • (5) Changes in mixed venous oxygen saturation of hemoglobin (SvO2), heart rate (HR), cardiac index, (SI) were measured in 20 patients undergoing major orthopedic surgery (rachis and pelvis bone resections for tumours: mean-lasting 8 hours), to estimate the safety limits during isovolemic hemodilution.
  • (6) One of the most popular was rachi-striene-stovainization, which was introduced by Jonnesco and attempted to replace general anesthesia (general rachianesthesia).
  • (7) After the development of the genital rachis into the ovotestis, spermatogenic cells increase in number and differentiation begins.
  • (8) The authors also made a comparative study of the conventional Milwaukee corset (with broad chin bearing) versus the Milwaukee with hyoid bearing; and finally they illustrate the results obtained by Andriacchi and his associates in selecting the Milwaukee corset for patients with idiopathic scoliosis on the basis of the mathematical model of the rachis.
  • (9) The authors describe the utility of fast and high-resolution multiplanar CT reconstructions in the study of the rachis.
  • (10) Our three observations in spite of their analogy with Kozlowski's type, are distinguished by more discrete lesions of the rachis and pelvis and by their autosomal recessive mode of inheritance.
  • (11) Rachis in the usual ways of the AHF is within its normal characteristics; on the other hand there are modifications in the nervous cases: the total proteins are nearly always increased and the cells augmented with a great predominance of mononuclear cells.
  • (12) Non tuberculous spondylodiscitis of the rachis is an uncommon entity that affects boys and male adults with greater frequency.
  • (13) For this reason we often use in the same time a 99mTc stannous pyrophosphates scintigraphy of rachis.
  • (14) Degeneration rarely occurred before the age of 50 years, affected men twice as frequently as women, and occurred particularly in cases of diffuse Paget's disease, mainly in the femur or the humerus; the rachis was rarely affected.
  • (15) Abnormal feathers, characterized by thinness and increased transparency of the calamus and rachis, and loss of barbs, were induced at a high frequency by inoculating day-old chicks with reticuloendotheliosis virus (REV) propagated in chicken-embryo fibroblast (CEF) cultures.
  • (16) We think it should be recommended for major surgery of the rachis.
  • (17) pelvis, femur, rachis, tibia, humerus, and the cancers most frequently involved--prostate, bronchi, kidney, breast and intestine.
  • (18) Wonder the global static of the rachis is little concerned in most of these children.
  • (19) Correct orthopedic therapy for traumas of the cervical rachis requires perfect knowledge of the spatial balance of the fracture focus.
  • (20) This experimental work, realized on a group of 25 monkeys, aims at determining the correct circulatory direction in rachis veins and the importance of the vertebral veinous circulation in the general return circulation.