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A. Portion of a medium sized human muscular fiber. B. Separated bundles of fibrils equally magnified. Labels: a, larger, and b, smaller collections; c, still smaller; d, smallest which could be detached, possibly representing a single series of sarcous element.

Muscular Fiber

A. Portion of a medium sized human muscular fiber. B. Separated bundles of fibrils equally magnified.…

Three muscular fibers running longitudinally, and two bundles of fibers in transverse section, M, from the tongue. The capillaries, C, are injected.

Muscular Fiber

Three muscular fibers running longitudinally, and two bundles of fibers in transverse section, M, from…

Part of a striped muscle fiber of a water beetle prepared with absolute alcohol. Labels: A, sarcolemma; B, Krause's membrane. The sarcolemma shows regular bulgings. Above and below Krause's membrane are seen the transparent "lateral discs". The chief mass of a muscular compartment is occupied by the contractile disc composed of sarcous elements. The substance of the individual sarcous elements has collected more at the extremity than in the center: hence this latter is ore transparent. The optical effect of this is that the contractile disc appears to posses a "median disc" (Disc of Hensen). Several nuclei of muscle corpuscles, C and D, are shown, and in them a minute network.

Striped Muscular Fiber of a Beetle

Part of a striped muscle fiber of a water beetle prepared with absolute alcohol. Labels: A, sarcolemma;…

Muscular fiber torn across; the sarcolemma still connecting the two parts of the fiber.

Torn Muscular Fiber

Muscular fiber torn across; the sarcolemma still connecting the two parts of the fiber.

Transverse section through muscular fibers of human tongue. The muscle corpuscles are indicated by their deeply stained nuclei situated at the inside of the sarcolemma. Each muscle fiber shows "Cohnheim's fields," that is, the sarcous elements in transverse section separated by clear (apparently linear) interstitial substance.

Muscular Fibers of the Human Tongue

Transverse section through muscular fibers of human tongue. The muscle corpuscles are indicated by their…

Striped muscle tissue, also known as voluntary muscle. Labels: 1, Longitudinal cleavage; 2, 3, 4, transverse cleavage.

Striped Muscular Tissue

Striped muscle tissue, also known as voluntary muscle. Labels: 1, Longitudinal cleavage; 2, 3, 4, transverse…