. Kirkes' handbook of physiology . Fig. 71. Fig. 72. Fig. 71.—Muscle Fiber Torn Across; the sarcolemma still connects the two parts of the fiber.(Todd and Bowman.) Fig. 72.—Part of a Striped Muscle Fiber of a Water Beetle prepared with Absolute , Sarcolemma; B, Krauses membrane. The sarcolemma shows regular bulgings. Above andbelow Krauses membrane are seen the transparent lateral discs. The chief mass of a muscularcompartment is occupied by the contractile disc composed of sarcous elements. The substance ofthe individual sarcous elements has collected more at the extremity than in th
. Kirkes' handbook of physiology . Fig. 71. Fig. 72. Fig. 71.—Muscle Fiber Torn Across; the sarcolemma still connects the two parts of the fiber.(Todd and Bowman.) Fig. 72.—Part of a Striped Muscle Fiber of a Water Beetle prepared with Absolute , Sarcolemma; B, Krauses membrane. The sarcolemma shows regular bulgings. Above andbelow Krauses membrane are seen the transparent lateral discs. The chief mass of a muscularcompartment is occupied by the contractile disc composed of sarcous elements. The substance ofthe individual sarcous elements has collected more at the extremity than in the center; hence thislatter is more transparent. The optical effect is that the contractile disc appears to possess amedian disc (Disc of Hensen). Several nuclei, C and D, are shown, and in them a minute net-work. X 300. (Klein and Noble Smith.) of those muscles which are under the control of the will and hence termedvoluntary; also the muscle of the heart. SKELETAL MUSCLE 59 For the sake of description, striated muscular tissu
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