. Physiology, experimental and descriptive . >le<:e of J|/Ifl§| Bundle of Muscle Fibers chipped beef, are continuous fflffnWHl with the Muscle Sheath, and both are continuous with the tendons at the ends of the muscle. In fresh muscle the sheath and the partitions are, nearly transparent, and are not easily seen. When the meat is cooked or salted the connective tissue becomes opaque and is white. In frogs or rabbits mus-cle observe the thin, trans-parent membrane covering- the muscle, the muscle forceps tear away part of themuscle sheath. Tear the muscle topieces, and note it
. Physiology, experimental and descriptive . >le<:e of J|/Ifl§| Bundle of Muscle Fibers chipped beef, are continuous fflffnWHl with the Muscle Sheath, and both are continuous with the tendons at the ends of the muscle. In fresh muscle the sheath and the partitions are, nearly transparent, and are not easily seen. When the meat is cooked or salted the connective tissue becomes opaque and is white. In frogs or rabbits mus-cle observe the thin, trans-parent membrane covering- the muscle, the muscle forceps tear away part of themuscle sheath. Tear the muscle topieces, and note its fibrous a shred of muscle in a drop ofnormal saline solution on a slide, andexamine with low power of the micro-scope ; again examine with a higherpower. The cross-markings, or stri-ations, will be seen. Such muscle is called Striated or Striped Muscle. All of the muscles used in ordinary motions are of this kind. In well-cooked corned-beef the connective tissue is thor- LONGITUDINAL SECTION Fig. 4. The Structure of Fig. 5. Two Muscular Fibers,showing the Terminations ofthe Nerves. 16 MOTION. oughly softened, and the muscle fibers are easily cooking, especially slow boiling, will soften the con-nective tissue, and may render palatable meat that, cookedotherwise, would be exceedingly tough on account of the largeamount of connective tissue. A good way to represent the structure of muscle is to takea number of pieces of red cord to represent the muscle each in white tissue paper a little longer than thethread; this represents the individual fiber with its a number of these side by side; wrap all in a commonsheath; let the tissue paper project beyond the threads, andhere compress it into a compact cylinder; this last corre-sponds to the tendon. Instead of one long fiber continuousthrough the length of the muscle, there are many short fibers.(See Fig. 4.) The connective tissue forms a framework for all the tissueso
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