# T-tubule

> invagination of the plasma membrane of a muscle cell that extends inward from the cell surface around each myofibril; the ends of T-tubules make contact with the sarcoplasmic reticulum membrane

**Wikidata**: [Q2983734](https://www.wikidata.org/wiki/Q2983734)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/T-tubule)  
**Source**: https://4ort.xyz/entity/t-tubule


## References

1. Gene Ontology release 2019-10-07
2. Freebase Data Dumps. 2013
3. UMLS 2023
4. Great Norwegian Encyclopedia
5. KBpedia