| 释义 |
radial canal radial canal[′rād·ē·əl kə′nal] (invertebrate zoology) One of the numerous canals that radiate from the spongocoel in certain Porifera. Any of the canals extending from the coelenteron to the circular canal in the margin of the umbrella in jellyfishes. A canal radiating from the circumoral canal along each ambulacral area in many echinoderms. |