Diseases of the nervous system : a text-book of neurology and psychiatry . dysarthria, or jumbled speech. The subject of aphasic speech willbe discussed later. The Tenth Nerve.—The study of the heart action is referred to thechapter on the Vegetative Nervous System. The Eleventh Nerve or Spinal Accessory.—This nerve supplies thesternomastoid and the trapezius. Its functional capacity is testedby the ability to raise the shoulders and to turn the neck, pressureBeing made on the chin in resistance. There are a number of normal 42 METHODS OF NEUROLOGICAL EXAMINATION displacements resulting from p
Diseases of the nervous system : a text-book of neurology and psychiatry . dysarthria, or jumbled speech. The subject of aphasic speech willbe discussed later. The Tenth Nerve.—The study of the heart action is referred to thechapter on the Vegetative Nervous System. The Eleventh Nerve or Spinal Accessory.—This nerve supplies thesternomastoid and the trapezius. Its functional capacity is testedby the ability to raise the shoulders and to turn the neck, pressureBeing made on the chin in resistance. There are a number of normal 42 METHODS OF NEUROLOGICAL EXAMINATION displacements resulting from paralysis of this nerve which will bediscussed later under the head of Paralysis. Trajyezius , iSterno oleido mastoidXI. C2-S~ Subclavius Co,Deltoid-Subscapularis C5{G),Coraco brachialsOS,Pectoralis minor_^Latissimus dorsiC6-8~ Serratus magniis Superficial niusolesof the face VII Infe) lor hyoid region XII pair In ternal descending branch C2,S Platysma niyoidesVII+C2 Pectoralis major ^^^ (clavicular)-\-Deltoid Pectoralis major{sternal) Pectoralis major(costal). Supinator brevis_C5, G, 7 Intel nalIectus Li-iAdductoi uiagnui, ?^?^ Anterioi lettm Addiuto){Red. fern.) longus •Brachialis anticus C5, 6Pronator rad. teresEx tens. carp,rad. I. C(5)6, 7Supinator longusExteiis. carp,rad. (5)6, 7IaliHarislongusalmaris brevisFlexorsublimisUgitorumCI, 8 DlFlexorlongusnollicis Anterio) rectus(Beet, fern.) Fig. 11.—Radicular innervation of the muscles of the anterior regions of the head,neck, trunk, and upper extremities. On the left, the superficial muscular layer; on theright, the deep muscular layer. (After Dejerine.) C, cervical; D, dorsal; L, lumbar. CRANIAL NERVES 43 Inferior inaxiUaryInternal descendingbranch cervical ijlexusHyjmglossal N. to anuularisN. toscaleni N. of rectus capitib anticus major Cl-i Anterior thui acic mt Subscapularissup. et plejcub Latissimus dorsi Posterior thoracic Musculo cutaneoub^Brachial plexus Facial N. Maxillar
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