sarcosome Biol.
(ˈsɑːkəʊsəʊm)
[ad. G. sarcosom (G. Retzius 1890, in Biol. Untersuchungen Neue Folge I. 76): see sarco- and -some4.]
A large mitochondrion found in striated muscle.
| 1899 tr. Verworn's Gen. Physiol. v. 464 The granules, or sarcosomes, lying in the sarcoplasm between the individual fibrillæ were enormously enlarged in the fatigued..muscle. 1912 Amer. Jrnl. Anat. XIV. 5 The ‘exoplasmic granules’ (J granules and Q granules) and the ‘endoplasmic granules’ of Holmgren correspond to the ‘Sarcosomes’ of Retzius which in turn correspond to Kölliker's true interstitial granules. It is possible that Retzius and Holmgren may have occasionally confused fat droplets with sarcosomes. 1919 Anat. Rec. XVI. 217 The wing muscle of the mantis furnishes an exceptionally favorable material for the investigation of the interfibrillar sarcoplasmic granules, or ‘sarcosomes’, characteristic of insect wing muscle. 1956 Physiol. Rev. XXXVI. 3 It is proposed in this article..to use the term sarcosome in its original sense as a general term to describe the lipoprotein granules which lie between the myofibrils and which can be seen with the light microscope. 1970 Sci. Amer. Feb. 101 The specialized mitochondria of the myocardial cell are unusually large; they are called sarcosomes. |