. Cunningham's Text-book of anatomy. Anatomy. 768 THE NEKVOUS SYSTEM. The olfactory nerves, about twenty in number, arise from the under surface of the olfactory bulb. The fibres are non-medullated. Piercing the cribriform plate of the ethmoid bone, enveloped in sheaths of dura mater, they are distributed in the nasal cavity as the nerves of smell. The fibres form fine plexuses over a limited area on the superior portion of the nasal septum, and to a less extent over the lateral wall of the nose. Olfactory bulb.â Olfactory tract Olfactory tubercle- Optic nerveâj Optic chiasma Oculo-motor nerv
. Cunningham's Text-book of anatomy. Anatomy. 768 THE NEKVOUS SYSTEM. The olfactory nerves, about twenty in number, arise from the under surface of the olfactory bulb. The fibres are non-medullated. Piercing the cribriform plate of the ethmoid bone, enveloped in sheaths of dura mater, they are distributed in the nasal cavity as the nerves of smell. The fibres form fine plexuses over a limited area on the superior portion of the nasal septum, and to a less extent over the lateral wall of the nose. Olfactory bulb.â Olfactory tract Olfactory tubercle- Optic nerveâj Optic chiasma Oculo-motor nerv Trochlear nerve- Trigeminal nervi Abducens nerve Facial nerve. X. intermedin Acoustic Olfactory bulb Olfactory tract Area parol factoria _ Olfactory tubercle ^Medial stria of olfactory nerve ^â'Lateral stria Pi Jptic chiasma J^" Ant. perforated sub- "V v stance âTemporal lobe (cut) Optic tract Oculo-motor nerve -^--Trochlear nerve f_A_Stria terminalis i-Trigeminal nerve -f- Lat. geniculate body Abducens nerve - Med. geniculate body Pulvinar Facial nerve N. intermedius Acoustic nerve Lateral ventricle Mid. cerebellar peduncle Glossopharyngeal nerve â Vagus nerve Accessory nerve Accessory nerve (spinal Occipital lobe (cut) Glossopharyngeal nerve g â .._ Vagus nerve "^ Accessory nerve (accessory) Accessory nerve (spinal) Hypoglossal nerve Hypoglossal nerve Spinal medulla Vermis of cerebellum (cut) Fig. 643.âView of the Inferior Surface of the Brain, With the lower portion of the temporal and occipital lobes, and the cerebellum on the left side removed, to show the origins of the cerebral nerves. Nervus Opticus. The second or optic nerve arises from the brain by means of the optic tract (Fig. 643). This takes origin from the pulvinar of the thalamus, from the lateral and medial geniculate bodies, and from the brachium of the upper of the two corpora quadrigemina (vide pp. 619 and 620). The optic tract reaches the base of the brain after sweeping round
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
