different between zonula vs zonule

English

Etymology

Borrowed from Latin z?nula (“small belt or girdle”).

Noun

zonula (plural zonulae or zonulas)

1. (anatomy) Any of several small belt-like regions.
   • 1883, Half-yearly compendium of medical science, Volumes 31-34, page 146,

     The zonula originates by a small number of delicate fibres from the vitreous [lamella].

   • 1980, Yves Le Grand, Sami G. El Hage, Physiological Optics, page 95,

     Nevertheless, the zonula is most often considered as the principal agent of transmission.

Derived terms

• zonula adherens
• zonula ciliaris
• zonula occludens

See also

• zonule

Anagrams

• Lauzon

Latin

Etymology

Diminutive form of z?na (“belt”, “girdle”), formed as z?na +? -ula (suffix forming feminine diminutives).

Pronunciation

• (Classical) IPA^(key): /?zo?.nu.la/, [?d??z?o?n???ä]
• (Ecclesiastical) IPA^(key): /?d?zo.nu.la/, [?d??z???nul?]

Noun

z?nula f (genitive z?nulae); first declension

1. a little or small belt or girdle

Declension

First-declension noun.

Related terms

• z?n?lis
• z?n?rius
• z?n?tim

Descendants

• English: zonula, zonule
• Italian: zonula

References

• z?n?la in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• z?n?la in Gaffiot, Félix (1934) Dictionnaire illustré Latin-Français, Hachette, page 1,702/2

English

Etymology

Parallel with zonula, with zona +? -ula being homologous to zone +? -ule.

Noun

zonule (plural zonules)

1. (anatomy) A little zone, or girdle; a zonula.
   • 1963, M. G. Farquar, G. E. Palade, Junctional complexes in various epithelia, The Journal of Cell Biology, Volume 17, republished 2001, Joseph G. Gall, J. Richard McIntosh (editors), Landmark Papers in Cell Biology, page 261,

     Each tight junction is followed by an adhering zonule extending between arrows 2 and 3 and, farther away, by a desmosome marked D. A condensation of finely fibrillar material occurs mainly along the adhering zonules on each side of the bile capillary.

2. (anatomy) The zonule of Zinn.
   • 2004, E. Ahmed, A Textbook of Ophthalmology, page 270,

     The rim of a small-sized lens along with zonule is clearly seen through the fully dilated pupil.

   • 2009, Frank W. Howes, 5.4: Indications for Lens Surgery / Indications for Application of Different Lens Surgery Techniques, Myron Yanoff, Jay S. Duker (editors), Ophthalmology, 3rd Edition, page 429,

     In most cases, the goal of this type of lens surgery is the same as that for eyes without a compromised zonule: to remove the contents of the capsular bag through a CCC^{[continuous curvilinear capsulectomy]} and replace the contents with a foldable IOL.^{[intraocular lens]}

Derived terms

• ciliary zonule, zonule of Zinn
• zonulitis

Related terms

• zonular