annulus


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Related to annulus: Annulus fibrosus, Annulus of Zinn

annulus

 [an´u-lus] (pl. an´nuli) (L.)
alternate spelling of anulus.

annulus

(ăn′yə-ləs)
n. pl. annu·luses or annu·li (-lī′)
1. A ringlike figure, part, structure, or marking, such as a growth ring on the scale of a fish.
2.
a. A ring or group of thick-walled cells around the sporangia of many ferns that functions in spore release.
b. The ringlike remains of a broken partial veil, found around the stipes of certain mushrooms.

annulus

Any ring-like structure (e.g., mitral valve annulus).

annulus

Any ring-like structure.

annulus

  1. the ring of cells in the moss or fern capsule which splits to allow the liberation of spores.
  2. a ring of tissue surrounding the stalk in the fruiting bodies of the BASIDIOMYCOTA fungi.
References in periodicals archive ?
The WellSpring annulus intervention system offers minimally intrusive equipment allowing the wellhead remediation of annular integrity issues without the use of a heavy workover rig, resulting in reduced costs.
However, the stress on the annulus fibrosus was the highest (166%) at T10 so its risk of damage was greater and would accelerate intervertebral disc degeneration.
In vitro and in vivo studies have suggested that aggrecan and Type II collagen serve important roles in the pathogenesis of IDD.[10],[11] Proteoglycan aggregates in adult human nucleus pulposus are mainly distributed within the extracellular matrix, while those of the annulus fibrosis are mainly distributed between collagen fibers.
Then all the zeros of p(z) lie in the annulus A = {z : [r.sub.1] [less than or equal to] [absolute value of z] [less than or equal to] [r.sub.2]}, where
Unger, "Swinging cardiac calcified amorphous tumour arising from a calcified mitral annulus in a patient with normal renal function," BMJ Case Reports, vol.
We have used interrupted sutures to attach detached tricuspid leaflet to the annulus when patient is still under cardiac arrest.
Pulmonary valvotomy with transannular extension was done in patients with small pulmonary valve annulus. In cases of doubly committed sub-arterial ventricular septal defect (DCSA VSD), VSD closure was done by a combined approach through right atrium and pulmonary artery.
annulus, based on shell morphology; analyze the size and stages of the development of gold ring cowrys and investigate the similarities and phenotypic distances of gold ring cowrys in Ambon and Larat Island with numerical taxonomic approaches.
Once the plug was deployed and set at location, each seal was leak tested at 110% of the maximum potential isolation pressure in turn, and once the seal integrity was proved, the annulus was then vented to ambient to create a zero-energy zone, providing effective double block-and-bleed isolation.
We noticed a structure that was thicker than the fibrocartilaginous annulus of the tympanic membrane and which was mobilized with the mobilization of the chorda tympani.
Disagreements in annulus counts were resolved by at least 2 readers, without knowledge of previous counts.