interradius


Also found in: Dictionary.

interradius

[‚in·tər′rād·ē·əs]
(invertebrate zoology)
The area between two adjacent arms in echinoderms.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
A nerve ring runs, at an oblique angle, from the common base of the three pedalia (at the interradius) to the origin of the rhopalial stalk, then back down to the next pedalial base, and so on around the subumbrella (Fig.
The oral surface of the dwarf male is pressed against the oral surface of the larger female, and the arms of the male cling to the female at the interradius position (Fig.
The gonoduct exits anteriodorsally from the gonad basis and leads to single or multiple external gonopores located between or near the tentacles in interradius CD.
In Eucidaris tribuloides, we found that the radial nerve sends off two additional nerve cords, that we name jaw nerves, in each interradius. They run along the inside of the jaw near each dental slide [ILLUSTRATION FOR FIGURE 2, 32 OMITTED].