| Name: | pronephros |
|---|---|
| Synonyms: | embryonic kidney, pronephric nephron |
| Definition: | The embryonic kidney, present at the level of the third somite, is composed of two glomeruli fused at the midline, two pronephric tubules, and paired bilateral pronephric ducts that modify the composition of the blood filtrate before delivering it to the cloaca for excretion. |
| Ontology: | Anatomy Ontology [ZFA:0000151] |
| Name: | apical-basal axis relative to substrate |
|---|---|
| Synonyms: | apical/basal, longitudinal axis |
| Definition: | An axis that extends through an organism or organism part from the part of the organism or organism part attached to a substrate (basal) to the furthest from the attachment (apical). Note that the apical-basal axis is often used for organismal parts where there is attachment via a basal lamina or other structure. |
| Ontology: | Spatial Ontology [BSPO:0000014] |