part of start stage end stage sclerotome somite 22 zebrafish_anatomy ZFA:0000833 Ventromedial region of somite 22 that will form vertebral cartilages and connective tissues. The sclerotome lies ventral to the myotome. Cells of the sclerotome will migrate dorsally to surround the notochord and neural tube. TAO:0000833 somite 22 sclerotome segmentation:26+ somites hatching:pec-fin