Term: intestinal bulb intestine lumen
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]