part of start stage end stage rhombomere 6 rhombomere 8 rhombomere 2 rhombomere 5 rhombomere 3 rhombomere 7 rhombomere 4 rhombic lip lower rhombic lip Posterior portion of the rhombic lip contained within rhombomeres 2-8. Gives rise to several brainstem nuclei and choroid plexus. ZFA:0001441 TAO:0001441 zebrafish_anatomy multi-tissue structure segmentation:10-13 somites segmentation:26+ somites