Diseases of the nervous system / edited by Archibald Church.

Date:: 1908

Credit: Diseases of the nervous system / edited by Archibald Church. Source: Wellcome Collection.

53/1256 page 25

$groove of the skull or the cerebellum, even without attaining great develop- ment, may cause multiple cranial nerve paralyses. The abducens emerges medially from the transverse furrow between the pons and the medulla, while the facial and acoustic (YII and VIII) nerves appear at the side of the medulla oblongata. The glosso-pharyngeal and vagus follow caudad, Bulbus olfactorius (I) Tractus olfactorius \ Chiasma opticum N. opticus (II) Trigonum olfactorium Tractus optijcuB N. oculomotorius % (III) N. trocblearia (IV) N. trigeminus.^ (V) N.abducens (VI) N. facialis (VII) N. inter— mcdius N. acusticus — (VIII) N. glos.so pharyngeus (IX) N. vagus (X) N. accessorius (XI) / N. hypoglossus (XII) Polus frontalis I Fissura longitudinalis cerebri Sulcus olfactorius Hypophysis Fissura cerebri lateralis (Sylvii) Polus temporalis Substantia per- forata anterior Tuber cine- reum Corpus mamillare _ Infundibulum Fossa inter- -peduncularis (Tarini) ■Pedunculus cerebri Pons (Varoli) Flocculus Plexus chorioideus ventriculi quarti Foramen caecum Hcmisphjerium eerebelli Medulla oblongata Decussatio pyramiduto N. spinalis I Medulla spinalis Polus occipitalis Fig. 17.—The Base of the Brain Showing the Origin of the Roots of the Cranial, Nerves. The basal surface of the cerebrum in its posterior division is covered by the cerebellum. while the spinal accessory and hypoglossal nerves arise from the lateral parts of the lowest portion of the medulla oblongata, the former, indeed, from the uppermost part of the cervical cord. The individual parts of the cere- brum and the cerebellum at the base of the brain have been discussed in preceding sections.$

Diseases of the nervous system / edited by Archibald Church.

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