# H zone

> relatively pale zone traversing the center of the A band of a sarcomere, visible in relaxed muscle fibers; consists of the central portion of thick (myosin) filaments that are not overlapped by thin (actin) filaments

**Wikidata**: [Q21115302](https://www.wikidata.org/wiki/Q21115302)  
**Source**: https://4ort.xyz/entity/h-zone


## References

1. Gene Ontology release 2019-10-07
2. UMLS 2023