frontal wall

The detonation should bring down the entire frontal wall on the ship."

The space between vault, frontal walls and footpath is filled with cracked stone.

The lophophore is protruded by action of muscles pulling on frontal wall.

The structure of the individual zooids is generally simple, with an uncalcified, flexible frontal wall.

It had become impossible to recognize the landscape of the swampy planet behind the shimmering frontal wall.

The zooids generally have one or more adventitious avicularia on their frontal wall.

The frontal walls are fifteen feet thick.

At the base of the gandi in the frontal wall there is a miniature rekha angasikhara.

The frontal wall is usually covered with small pores and numerous larger pores along the margin.

Like in other gymnolaematans, their lophophore is protruded by muscles that pull on the frontal wall of the zooid.

In many cases, the cave or grotto was simply sealed by a frontal wall and divided internally by stone or wooden partition walls.

The wave picked him up and he found himself caught in its high frontal wall, racing onwards with his head and the top half of his body free.

If they had gone north, they could have reached the massive frontal wall of the continental ice sheet in a walk of a handful or two of days.

In the fixed-walled forms, these narrow pores constitute the only coelomic connection, because the vertical walls contact and fuse with the calcified, exterior frontal walls.

With this new angle, around the side of the largest, frontal wall, they could see scores of soldiers, including large, hairy bugbears, ten-foot-tall ogres, and even a giant.

Beyond the wall was the keep's big stairshaft, and in its opposite wall, or in the stair pillars themselves, were sockets-one for each hole in the frontal wall.

The ovicell, which broods the larvae internally, is double-layered with numerous pores in the outer layer, and sits quite prominently on the frontal wall of the next zooid.

The structure of the individual zooids is generally simple, a box-like chamber of calcium carbonate, the polypides reaching out through an uncalcified flexible frontal wall, often surrounded by numerous spines.

However, in free-walled forms, the frontal walls are uncalcified, and no contact is made with the vertical walls, creating a wider coelomic connection around the distal ends of the vertical walls.

The structure of this frontal wall is the basis of distinguishing the four major subdivisions of the Ascophora, each of which is, however, currently under suspicion of being polyphyletic and/or paraphyletic.

By contrast, fixed-walled (or single-walled) cyclostomes have much of the exterior frontal wall calcified; autozooids normally have a subcircular aperture located at or close to the frontal wall.

In free-walled (or double-walled) cyclostomes, the exterior frontal walls of the zooids are uncalcified; autozooids have either a polygonal aperture bounded by vertical interior walls, or alternatively a subcircular aperture in species with kenozooids filling the spaces between the autozooids.

It functions as a hydrostatic system by allowing water into the space below the inflexible frontal wall when the zooid everts its polypide (feeding tentacles) by muscles pulling the frontal membrane inwards (non-ascophorans do not need this structure as their frontal wall is not calcified).