Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Each mitochondrion is surrounded by a double limiting membrane. The inner membrane is highly invaginated, and its projections are called cristae. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP. They contain distinctive RIBOSOMES, transfer RNAs (RNA, TRANSFER); AMINO ACYL T RNA SYNTHETASES; and elongation and termination factors. Mitochondria depend upon genes within the nucleus of the cells in which they reside for many essential messenger RNAs (RNA, MESSENGER). Mitochondria are believed to have arisen from aerobic bacteria that established a symbiotic relationship with primitive protoeukaryotes. (King & Stansfield, A Dictionary of Genetics, 4th ed)

Descriptor ID	D008928
MeSH Number(s)	A11.284.430.214.190.875.564 A11.284.835.626
Concept/Terms	Mitochondria Mitochondria Mitochondrion Mitochondrial Contraction Mitochondrial Contraction Contraction, Mitochondrial Contractions, Mitochondrial Mitochondrial Contractions

Below are MeSH descriptors whose meaning is more general than "Mitochondria".

Below are MeSH descriptors whose meaning is related to "Mitochondria".

Below are MeSH descriptors whose meaning is more specific than "Mitochondria".