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 (pĕr′ə-mĭzh′ē-əm, -mĭz′ē-əm)
n. pl. per·i·my·si·a (-mĭzh′ē-ə, -mĭz′ē-ə)
The sheath of connective tissue enveloping bundles of muscle fibers.

[New Latin : peri- + Greek mūs, muscle; see mūs- in Indo-European roots.]


n, pl -ia (-ɪə)
(Anatomy) anatomy the sheath of fibrous connective tissue surrounding the primary bundles of muscle fibres
[C19: from peri- + -mysium, from Greek mus muscle]


(ˌpɛr əˈmɪz i əm, -ˈmɪʒ-)

n., pl. -my•si•a (-ˈmɪz i ə, -ˈmɪʒ-)
the connective tissue surrounding bundles of skeletal muscle fibers.
[1835–45; irreg. from peri- + Greek mŷs mouse, muscle (compare myo-) + -ium2]
per`i•my′si•al, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.perimysium - the sheath of connective tissue that covers a bundle of muscle fibers
connective tissue - tissue of mesodermal origin consisting of e.g. collagen fibroblasts and fatty cells; supports organs and fills spaces between them and forms tendons and ligaments
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References in periodicals archive ?
Both DMD and DGR present progressive clinical signs and severe myopathy with initial fiber necrosis and regeneration associated with connective tissue proliferation in the endomysium and perimysium (VALENTINE et al.
Changes to the viscosity of HA causes densification of tissue and can modify the function of fascia, nerve receptors, muscle layers (epimysium and perimysium gliding) and hydrodynamic properties of connective tissue.
Histopathologic examination of multiple sections of skeletal muscle from the left thigh revealed increased amounts of fibrous connective tissue within the perimysium and diffuse variation in myofiber size (Fig 5).
Connective tissue of skeletal muscle that forms the endomysium, perimysium and epimysium provides structural frame for muscle tissue.
Phagocytic macrophages infiltrate the endomysium and perimysium of injured skeletal muscle after neutrophil invasion reaching a peak 1 d after exercise and remain elevated for -2-4 d depending on the magnitude of the insult [1, 3, 9].
From the Figure 3C, we can see that the muscle fibers of the TWFR group had almost entirely filled the endomysial space and muscle bundles had filled the perimysium.
2015) Myopathy with anti-HMGCR antibodies Perimysium and myofiber pathology.