Ontology explorer

GO:0097225

The highly organized segment of the sperm flagellum which begins at the connecting piece and is characterized by the presence of 9 outer dense fibers (ODFs) that lie outside each of the 9 outer axonemal microtubule doublets and by a sheath of mitochondria that encloses the ODFs and the axoneme; the midpiece terminates about one-fourth of the way down the sperm flagellum at the annulus, which marks the beginning of the principal piece

1. GOC: cjm
2. MP: 0009831

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derives from the parent element

// at least 1 tissue/ enzyme/ localization link in this branch

// tissue/ enzyme/ localization link to BRENDA