| Food and solid wastes enter and leave through a common opening in the well-developed digestive tract, which consists of a mouth, pharynx, and gastrovascular cavity. |
| The archenteron becomes the gastrovascular system or coelenteron. |
| The mouth opens into a cavity, the coelenteron, or gastrovascular cavity, which is digestive and circulatory at the same time. |
| To accomplish the bioassay, proliferating interstitial cells are labeled with BrdU by injecting BrdU into the gastrovascular cavity of the animal. |
| This opens into the gastrovascular cavity, where digestion takes place and nutrients are absorbed. |
| It allows for the prolongation and inter-communication of gastrovascular cavities, the coelenterons. |
