Buckmaster's Elements of animal physiology / by John Angell.

  • Angell, John
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: Buckmaster's Elements of animal physiology / by John Angell. Source: Wellcome Collection.

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    with nervous fibrils from the lingual or gustatory branch of the fifth cranial nerve, which constitutes the special nerve of taste. It is also supplied with fibrils from the lingual branch of the glosso-pharyngeal nerve (of common sensation). The ninth cranial or hypoglossal nerve, the motor nerve of the tongue, is distributed to its muscular substance. The Sense of Smell is seated in the nervous fila- ments of the mucous membrane which lines the upper part of the nasal cavities. By it we become conscious of the presence of odoriferous particles in the atmo- sphere. The immediate organ of smell, situated at the roof of the nose, consists of an arrangement by which the odoriferous particles are brought into contact with the fibrils of the olfactory nerve. The Nose is a triangular-shaped organ, comprising two symmetrical cavities, which are bounded on the exterior by bony and cartilaginous walls (the two nasal and upper maxillary bones), and separated inter- nally in the median line by a bony and cartilaginous septum. The interior of these cavities is lined with a fibro-serous membrane, termed the pituitary or Schneiderian membrane. The olfactory nerves leave the olfactory lobes of the cerebrum, pass through the cribriform (sieve-like) plate of the ethmoid hont (which forms part of the roof of the nose), run between the fibrous and the mucous layers of the Schneiderian membrane, and ultimately ramify in the mucous mem- brane which forms the inner lining of the nasal fossce. The fossce or cavities of the nose open exteriorly by the two anterior nares or nostrils, and posteriorly (into the pharynx) by the two posterior nares. . The lining membrane of the nose is also freely sup- plied with nerves of common sensation. The nasal cavi-