| Name: | somite |
|---|---|
| Synonyms: | somitic mesoderm |
| Definition: | Undifferentiated mesodermal components of early trunk or tail segments or metameres, derived from paraxial mesoderm; forms myotomes, sclerotomes and perhaps dermatomes. |
| Ontology: | Anatomy Ontology [ZFA:0000155] |
| Name: | I band |
|---|---|
| Synonyms: | I disc, isotropic disc, J disc |
| Definition: | A region of a sarcomere that appears as a light band on each side of the Z disc, comprising a region of the sarcomere where thin (actin) filaments are not overlapped by thick (myosin) filaments; contains actin, troponin, and tropomyosin; each sarcomere includes half of an I band at each end. |
| Ontology: | GO: Cellular Component [GO:0031674] QuickGO AmiGO |