perimysium


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perimysium

[‚per·ə′mī·sē·əm]
(anatomy)
The connective tissue sheath enveloping a muscle or a bundle of muscle fibers.
References in periodicals archive ?
The endomysial collagen between individual and small groups of muscle fibers is greatly thickened (compare Figure 16 with Figure 3, which shows a normal endomysium, and has conspicuous collagen only in its horizontal band of the perimysium separating the 2 muscle fascicles).
To help explain muscle structure, have a bunch of pencils and plastic wrap to make the endomysium, perimysium, and epimysium.
Light microscopic images of raw and boiled shrimp, focusing mianly on the transverse inner part of the shrimp meat, indicating muscle fibre, endomysium and perimysium, are shown in Fig.
(4) In chronic cases, there is new connective tissue deposition in the endomysium and perimysium. The differential diagnosis includes myositis ossificans, proliferative myositis, nodular fasciitis, and sarcoma.
Connective Collagen/Fibroblast fibrils of endomysium or Tissue perimysium, or spindle-shaped nucleus in interstitium.
The normal supraspinatus muscle has a hypoechoic appearance caused by hypoechoic muscle bundles, separated by thin hyperechoic lines, the fibroadipose septae or perimysium. (17)
The pectoralis major appears thick, and overlies pectoralis minor, with a strongly reflective hyperechogenic perimysium separating the two muscles.
The fibers were arranged in fascicles surrounded by the perimysium, with each fiber being surrounded by endomysium.
During the early fattening period from nine to 20 months of age, collagen fibrils within the endomysium in the longissimus muscle associate more closely with each other, the collagen fibers in the perimysium thicken, and their wavy pattern grows more regular [3].
A subcutaneous nodule measuring 1.5 cm in diameter was adhered to the skin and perimysium of the right pectoral muscle; it was of firm consistency and on cut surface consisted of brown laminated material.
Twelve terms encompassing structures often called fascia have been proposed [9]: dense connective tissue, areolar connective tissue, deep fascia, superficial fascia, interosseous membranes, intermuscular septae, epimysium, perimysium, endomysium, periosteum, neurovascular tract, and intra- and extramuscular aponeuroses.