| perimysium | <anatomy> The connective tissue sheath which surrounds a muscle, and sends partitions inwards between the bundles of muscular fibres. Origin: NL, fr. Gr. About + muscle. Source: Websters Dictionary (01 Mar 1998) |
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| perimysium externum | The fibrous connective tissue envelope surrounding a skeletal muscle. Synonym: perimysium externum. Origin: epi-+ G. Mys, muscle (05 Mar 2000) |
| perimysium internum | In the older literature, a term referring to the connective tissue around secondary and tertiary fascicles and individual fibres and also to the supporting framework of the myocardium. (05 Mar 2000) |