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- DictionaryPer·i·my·si·um/ˌperəˈmiZH(ē)əm/
noun
- 1. the sheath of connective tissue surrounding a bundle of muscle fibers.
noun
Perimysium is a sheath of dense irregular connective tissue that groups muscle fibers into bundles (anywhere between 10 and 100 or more) or fascicles. Studies of muscle physiology suggest that the perimysium plays a role in transmitting lateral contractile movements. This hypothesis is strongly supported in one exhibition of the existence of "perimysial junctional plates" in ungulate flexor carpi ... Wikipedia