. A practical treatise on medical diagnosis for students and physicians . the surface of the foot. Allied to the reflexes is the so-called paradoxical contraction of West-phal. This consists in a persistent spasm of the muscle when its twoattachments are suddenly brought closer together. It is most frequentlyobserved in the peroneal muscles of the leg, and may be elicited by sud-denly flexing the foot dorsally. It is found most frequently in variousfunctional conditions, and has also been observed in paralysis agitans. 308 EXAMINATION OF THE NERVOUS SYSTEM. Nutrition of Muscles. Next to the fu
. A practical treatise on medical diagnosis for students and physicians . the surface of the foot. Allied to the reflexes is the so-called paradoxical contraction of West-phal. This consists in a persistent spasm of the muscle when its twoattachments are suddenly brought closer together. It is most frequentlyobserved in the peroneal muscles of the leg, and may be elicited by sud-denly flexing the foot dorsally. It is found most frequently in variousfunctional conditions, and has also been observed in paralysis agitans. 308 EXAMINATION OF THE NERVOUS SYSTEM. Nutrition of Muscles. Next to the functional condition of the muscles, which is indicated bythe degree of power that they possess, we are interested in the state oftheir mdriiior. It may be suspected that this is impaired when fibrillarycontractions, atrophy, loss of power, or change in consistency are present. Fig. 50. M. oocipit. M. relrah. auricul. post. M. splsnius N. accessorius M. sternocleiJom. M. cucullaris N. axillaris (M. deltoid.) N. thoracic, long. (M. iDBJ. Plexus M. ^I. corrugator orbicul. palp. > Nasal muscles. M. levat. lab. zygoma ticus. > M. orbic. oris. M. masseter. [ levator menti men-M. depressor lab. inf. (quadr. menti).SI. depressor ang. oris (triangul. menti). X. hypoglossus. Platysma. M. sternohyoideus. M. omohyoideus. N. phreuicns. M. sternothyroideiis. Erbs point (M. del-toid., biceps, bracli,int. supinator long. N. thoracic ant. ( maj.). Motor points for the head and neck. (Sahli.) Atrophy of the muscles may usually be detected by simple only certain groups are involved, the latter will appear more or lessdistorted. It is always, however, important to measure the injured limband compare it with the sound side if the affection is unilateral. Whendue to general conditions, such as the muscular dystrophies or polyneu-ritis, it is sometimes more difficult to be certain of its existence
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