The circumoral nerves issue from under the lantern and run along the oral, cross over at the edge of the shell and then run along the aboral side.
To the left and to the right of the central bony part of the lantern the union of a radial with a circumoral nerve is shown.
As might be expected, the general arrangement of radial and circumoral bands are much as in sea-urchins, such as shown especially by Delage and Herouard 1903.
The circumoral nerve ring is looped over and under parts of the lantern.
In the circumoral and oral radial nerves the nerve cells are thickly massed from side to side, but in the upper part of the aboral nerve there is an evident arrangement of nerve cells in zones.
Diagram of one fifth of Aristotle's lantern of Dendraster showing three loops of the circumoral nerve ring, and parts of three radial nerves, the central one partly hidden at its origin by the lantern.
Head and circumoral processes of the fore-foot of Onychoteuthis (from Owen).
The anterior of these is the pedal b, b, and supplies the circumoral lobes and tentacles, and the funnel, a fact which proves the pedal origin of these organs.
All the tentacles of the circumoral disk are set in remarkable tubular sheaths, into which they can be drawn.
The tentacles of the outer circumoral lobe or annular lobe of the fore-foot projecting from their sheaths.
The circumoral lobes of the fore-foot carry numerous retractile tentacles, not suckers (fig.
The circumorallobes of the fore-foot carry suckers disposed upon them in rows, not tentacles (see figs.
In any case, it seems to the writer impossible to doubt that each tentacle, and its sheath on a lobe of the circumoral disk of Nautilus, corresponds to a sucker on such a lobe of a Dibranchiate.
In the case of equal fission the circumoral area lengthens in a horizontal direction, and as many extra tentacles as those the polyp already possesses make their appearance.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "circumoral" in a variety of sentences. We hope that you will now be able to make sentences using this word.
