A manual of anatomy . he oblongata, at the head end of the restiform spinal portion arises from the side of the spinal cord as low asthe sixth cervical nerves. These two portions join and leave thecranial cavity through the jugular foramen. The bulbar root sendsa branch to the ganglion nodosum of the vagal nerve and the re-mainder joins the vagal nerve and ultimately supplies the intrinsicmuscles of the larynx (except the m. cricothyreoideus), and furnishescardioinhibitory nerves to the vagus. The spinal portion {ramusexternus) passes into the neck and supplies the mm. sternoraastoide
A manual of anatomy . he oblongata, at the head end of the restiform spinal portion arises from the side of the spinal cord as low asthe sixth cervical nerves. These two portions join and leave thecranial cavity through the jugular foramen. The bulbar root sendsa branch to the ganglion nodosum of the vagal nerve and the re-mainder joins the vagal nerve and ultimately supplies the intrinsicmuscles of the larynx (except the m. cricothyreoideus), and furnishescardioinhibitory nerves to the vagus. The spinal portion {ramusexternus) passes into the neck and supplies the mm. sternoraastoideusand trapezius. THE NERVE SYSTEM The spinal portion communicates with the cervical plexus. Vagal and Glossopharyngeal Nerves {Nerviis Vagus et NervusGlossopharyngeus).—These nerves, though mixed, are mainly sensorand as their nuclei of origin and termination are so close together andso intimately associated they will be considered together. It is Extur^^l laryngeal ,l iaTyn:jeal tJCardiac /Jeri^i\<. Fir,, 314.—Course and distribution of the glossopharyngeal, vagal and accessory nerves. highly probable that the glossopharyngeal nerve is purely nuclei are the dorsal (mixed) nucleus, nucleus ambiguus andnucleus of the fasciculus solltarius. The dorsal irnixed) nucleus, long and rod-shaped, lies at the upperend of the hypoglossal nucleus and the motor part comprises thatportion nearest the midhne. The axones of the cells in this portion THE VAGAL AND GLOSSOPHAEYNGEAL NERVES 437 pass obliquely ventrolateral between the olivary nucleus and therestiform body, emerging from the oblongata between the ohve andthe end of the lateral column. The fibers belong to the vagus andpass to the esophagus, stomach, trachea and bronchi. This is anucleus of origin and the sensor part will be discussed later. The nucleus amhigims is deeply placed in the formatio reticularisand the substantia gelatinosa; it seems to be a continuation of thebulbar part of the accessory n
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthumananatomy, bookyea
