Such a rod is called a columella; it goes all the way through the center of the shell.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

From the septum grows a club-shaped mass of protoplasm -- "columella".    From Wordnik.com.  [The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged.] Reference

This picture shows the columella of P. spratti in the shell's body whorl.    From Wordnik.com.  [Land snails of Turkey: Paramastus spratti] Reference

In the Polytrichaceae another air space separates the spore-sac from the columella.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"] Reference

In reptiles the upper segment of the second arch formed, as in birds, the columella.    From Wordnik.com.  [Form and Function A Contribution to the History of Animal Morphology] Reference

This wall pushes up into the young sporangium, forming a structure called the "columella.".    From Wordnik.com.  [Elements of Structural and Systematic Botany For High Schools and Elementary College Courses] Reference

The actual columella, which was resorbed, would be located directly under the apex of the shell.    From Wordnik.com.  [Archive 2007-01-01] Reference

Paramastus spratti, which lacks any prominent lamellae or "teeth" in its aperture, has a straight columella.    From Wordnik.com.  [Land snails of Turkey: Paramastus spratti] Reference

The columella is formed from the middle piece of the three into which the cartilage of the second arch segments.    From Wordnik.com.  [Form and Function A Contribution to the History of Animal Morphology] Reference

The edge of the remaining portion of the inner wall blue arrow gives the false impression of being the columella.    From Wordnik.com.  [Archive 2007-01-01] Reference

The archesporium arises by the next divisions in the outer layer of cells, and thus extends over the summit of the columella.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"] Reference

The central region extending between the apophysis and the operculum is composed of sterile tissue and forms the columella (c).    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"] Reference

From one of the specimens recovered from the mound sepulchre, the spire and columella had been removed, leaving a hollow utensil.    From Wordnik.com.  [Scientific American, Volume XXIV., No. 12, March 18, 1871 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.] Reference

In the Andreaeales the columella does not extend to the upper end of the capsule, and the latter opens by a number of lateral slits.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"] Reference

It was carried by wrapping your fingers around the columella and putting your thumb through a neat hole chipped out of the body whorl.    From Wordnik.com.  [Indian shell tools from Florida] Reference

In some Anura it formed the ossicle of the ear (homologue of the columella of birds and the stapes of mammals), in others it disappeared.    From Wordnik.com.  [Form and Function A Contribution to the History of Animal Morphology] Reference

The first periclinal divisions in the cells of the terminal tier separate a central group of cells which form the sterile columella (col).    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"] Reference

A shell pin made from the columella of a large univalve.    From Wordnik.com.  [Illustrated Catalogue of a Portion of the Collections Made During the Field Season of 1881 Third Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1881-82, Government Printing Office, Washington, 1884, pages 427-510] Reference

A large specimen of shell pin, made from the columella of a.    From Wordnik.com.  [Illustrated Catalogue of a Portion of the Collections Made During the Field Season of 1881 Third Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1881-82, Government Printing Office, Washington, 1884, pages 427-510] Reference

Aperture is large and elongated, and the columella has several plaits.    From Wordnik.com.  [Report of the North-Carolina Geological Survey. Agriculture of the Eastern Counties: Together with Descriptions of the Fossils of the Marl Beds] Reference

The sporophyte is seen as long and narrow, and has a central columella.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

BEADS -- columella, from cairn 87 shell, found in cairn 28 stone, in cave 31.    From Wordnik.com.  [Archeological Investigations Bureau of American Ethnology, Bulletin 76] Reference

The central columella is made up of sterile tissue as well as basal meristem.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

The replacement alae are anchored to the columella or any residual medial crura.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

A strong muscle connected to the columella holds the snail's shell onto the body.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

In the hyd mutants, PIN3 localization showed a proximal shift to the columella initials at day.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Near the center were a few fragments of bone, with a columella bead 4 inches long, perforated lengthwise.    From Wordnik.com.  [Archeological Investigations Bureau of American Ethnology, Bulletin 76] Reference

The genus Fusus is distinguished by its straight open canal and the absence of plaits upon the columella.    From Wordnik.com.  [Report of the North-Carolina Geological Survey. Agriculture of the Eastern Counties: Together with Descriptions of the Fossils of the Marl Beds] Reference

The portion of the stalk that extends into the peridium (the capsule containing the spores) is the columella.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

A fine, solid, brown species, generally more or less eroded, and with a peculiarly strongly plicate columella.    From Wordnik.com.  [Explorations in Australia The Journals of John McDouall Stuart] Reference

This family has a convoluted shell; it is cylindrical, or subcylindrical, with a long narrow aperture; columella plaited.    From Wordnik.com.  [Report of the North-Carolina Geological Survey. Agriculture of the Eastern Counties: Together with Descriptions of the Fossils of the Marl Beds] Reference

In the middle ear there is but one bone, the columella, forming the connecting link between the tympanum and the internal ear.    From Wordnik.com.  [Harvard Psychological Studies, Volume 1 Containing Sixteen Experimental Investigations from the Harvard Psychological Laboratory.] Reference