NOTES ON THE FORM AND FUNCTION OF THE GOLGI APPARATUS IN STRIATED MUSCLE

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Abstract
Impregnation of striated muscle fibers with osmic acid demonstrates an interfibrillar network homologous with the Cajal-Fusari reticulum revealed by AgNO3. This network probably represents the Golgi material of striated muscle fibers, consisting of cross-fibers arranged in definite relation to the cross-striations and interconnected by longitudinal fibers. The whole network lying in the sarcoplasm between the so-called muscle columns, is thus in intimate positional relation to the so-called Q- and J-granules, which have many features in common with secretory granules. It is suggested that the customary identification of these granules with chondriosomes is not well founded, and that in their relations to the Golgi apparatus may lie an important clue to their real nature, as well as to the functional significance of the Golgi apparatus in striated muscle.

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