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Peripheral and central distribution of major branches of the facial taste nerve in the carp. 1985

S Kiyohara, and T Shiratani, and S Yamashita

The major pathways of the peripheral facial taste system in the carp, Cyprinus carpio, are the maxillary (Max), mandibular (Mand), palatine (Pal) and recurrent nerve rami. The peripheral distribution of the sensory fibers of these branches (B) was determined by means of electrophysiological techniques. Max.B., Mand.B. and Pal.B., each of which arises from the gasserian-geniculate ganglionic complexes, were found to innervate respectively, the upper lip and the adjacent skin, the internal and external surface of the lower lip region, and the upper lip and the anterior palate, ipsilaterally. The recurrent nerve sends fibers mainly via dorsal and ventral branches of the posterior lateral line nerve (NPLL), and a pectoral branch of the occipito-spinal nerve. The dorsal and ventral branches of NPLL innervate respectively, the dorsal fin and the adjacent body surface, and the remainder of the body surface. The pectoral branch supplies the pectoral fin. The central connections of the above branches were also examined by using the techniques of transganglionic tracing with horseradish peroxidase (HRP). HRP was applied to each of the branches, and its penetration of the brainstem was carefully followed. Labeled fibers were observed only in the ipsilateral region of the brainstem. When Max.B or Mand.B. was treated with HRP, labeled fibers were observed in the facial sensory root and in the descending trigeminal root. When Pal.B. was treated, however, they were traced only to the facial sensory root; thus indicating that the former two branches are trigeminofacial complexes and the latter is a pure facial nerve. Labeled fibers for NPLL were found in the facial sensory root as well as in bundles projecting to the lateral line areas. The facial fibers of Max.B. and Mand.B. innervate respectively in the dorsal-intermediate portion of the rostral half of the facial lobe, and in the ventral portion of the caudal half of the lobe. Those of Pal.B. however, cover a large area of the lobe anteroposteriorly except for the dorsal and ventral portions. The recurrent fibers of NPLL and the pectoral B. end in the dorsal-medial portion of the caudal half of the lobe. Thus the results of this study show that there is a topographical relation between the receptive field of the 6 peripheral nerve branches and their locus of representation in the facial lobe. Similarly, that the gustatory system through Pal.B. is represented on the facial lobe in a disproportionately large area compared to that of the other 5 branches.

UI MeSH Term Description Entries
D001931 Brain Mapping Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures. Brain Electrical Activity Mapping,Functional Cerebral Localization,Topographic Brain Mapping,Brain Mapping, Topographic,Functional Cerebral Localizations,Mapping, Brain,Mapping, Topographic Brain
D001933 Brain Stem The part of the brain that connects the CEREBRAL HEMISPHERES with the SPINAL CORD. It consists of the MESENCEPHALON; PONS; and MEDULLA OBLONGATA. Brainstem,Truncus Cerebri,Brain Stems,Brainstems,Cerebri, Truncus,Cerebrus, Truncus,Truncus Cerebrus
D002347 Carps Common name for a number of different species of fish in the family Cyprinidae. This includes, among others, the common carp, crucian carp, grass carp, and silver carp. Carassius carassius,Crucian Carp,Cyprinus,Grass Carp,Carp,Ctenopharyngodon idellus,Cyprinus carpio,Hypophthalmichthys molitrix,Koi Carp,Silver Carp,Carp, Crucian,Carp, Grass,Carp, Koi,Carp, Silver,Carps, Crucian,Carps, Grass,Carps, Silver,Crucian Carps,Grass Carps,Silver Carps
D003391 Cranial Nerves Twelve pairs of nerves that carry general afferent, visceral afferent, special afferent, somatic efferent, and autonomic efferent fibers. Cranial Nerve,Nerve, Cranial,Nerves, Cranial
D003530 Cyprinidae A family of freshwater fish comprising the minnows or CARPS. Barbels,Chub,Dace,Minnows,Roach (Fish),Shiner,Tench,Tinca,Barbus,Rutilus rutilus,Tinca tinca,Chubs,Shiners,Tinca tincas,tinca, Tinca
D005154 Facial Nerve The 7th cranial nerve. The facial nerve has two parts, the larger motor root which may be called the facial nerve proper, and the smaller intermediate or sensory root. Together they provide efferent innervation to the muscles of facial expression and to the lacrimal and SALIVARY GLANDS, and convey afferent information for TASTE from the anterior two-thirds of the TONGUE and for TOUCH from the EXTERNAL EAR. Cranial Nerve VII,Marginal Mandibular Branch,Marginal Mandibular Nerve,Seventh Cranial Nerve,Nerve VII,Nerve of Wrisberg,Nervus Facialis,Nervus Intermedius,Nervus Intermedius of Wrisberg,Cranial Nerve VIIs,Cranial Nerve, Seventh,Facial Nerves,Mandibular Nerve, Marginal,Mandibular Nerves, Marginal,Marginal Mandibular Nerves,Nerve VIIs,Nerve, Facial,Nerve, Marginal Mandibular,Nerve, Seventh Cranial,Nerves, Marginal Mandibular,Nervus Faciali,Seventh Cranial Nerves,Wrisberg Nerve,Wrisberg Nervus Intermedius
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013649 Taste The ability to detect chemicals through gustatory receptors in the mouth, including those on the TONGUE; the PALATE; the PHARYNX; and the EPIGLOTTIS. Gustation,Taste Sense,Gustations,Sense, Taste,Senses, Taste,Taste Senses,Tastes
D014276 Trigeminal Nerve The 5th and largest cranial nerve. The trigeminal nerve is a mixed motor and sensory nerve. The larger sensory part forms the ophthalmic, mandibular, and maxillary nerves which carry afferents sensitive to external or internal stimuli from the skin, muscles, and joints of the face and mouth and from the teeth. Most of these fibers originate from cells of the TRIGEMINAL GANGLION and project to the TRIGEMINAL NUCLEUS of the brain stem. The smaller motor part arises from the brain stem trigeminal motor nucleus and innervates the muscles of mastication. Cranial Nerve V,Fifth Cranial Nerve,Nerve V,Nervus Trigeminus,Cranial Nerve, Fifth,Fifth Cranial Nerves,Nerve V, Cranial,Nerve Vs,Nerve, Fifth Cranial,Nerve, Trigeminal,Trigeminal Nerves,Trigeminus, Nervus

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