| Name: | intestinal bulb | 
|---|---|
| Synonyms: | anterior intestine, foregut, pseudogaster | 
| Definition: | The bulbous anteriormost portion of the intestine has the most digestive enzymes and the greatest epithelial surface area. | 
| Ontology: | Anatomy Ontology [ZFA:0001076] | 
| Name: | intestine lumen | 
|---|---|
| Synonyms: | gut lumen | 
| Definition: | Anatomical space within the intestine where digestion normally occurs. The intestinal lumen begins as an interconnected web of small space at 43 hpf that over time remodels to form a single continuous tube at 68hpf. Lumen maturation proceeds from anterior to posterior along the intestine. | 
| Ontology: | Anatomy Ontology [ZFA:0005807] |