Topographical representation of peripheral branches of the facial nerve within the facial nucleus: A HRP study in the cat

Kume, Mamoru; Uemura, Masanori; Matsuda, Kiyoaki; Matsushima, Ryoka; Mizuno, Noboru

doi:10.1016/0304-3940(78)90088-5

Cited by 91 publications

(30 citation statements)

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“…Moreover, a similar distribution of neurons within the medial subnucleus that innervate auricular muscles has been reported in the mouse and in the cat. However, these reports did not include all of the auricular muscles (Kume et al, 1978;Komiyama et al, 1984). In our study, retrogradely labeled neurons were observed not only in the medial subnucleus, but also in the intermediate and lateral subnuclei after HRP was injected into m. parotideoauricularis.…”

Section: Distribution Of Hrp-labeled Neurons In the Facial Nucleuscontrasting

confidence: 47%

“…Individual muscle branches of the facial nerve originate from particular facial subdivisions. For example, the posterior auricular nerve originates from the medial subdivision in the cat, whereas one facial subdivision provides several muscle branches of the facial nerve in rodents (Kume et al, 1978;Komiyama et al, 1984). Therefore, the classification of a facial subdivision requires the identification of the neurons within the facial subnuclei that innervate each facial muscle.…”

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confidence: 99%

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Projection from the Facial Nucleus to the Auricular Muscles of Rabbits

Furutani

Sugita

2004

Okajimas Folia Anat. Jpn.

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Summary: The auricular muscles correspond to the group of facial muscles that allows the auricle to move freely. The shape of the auricle and the location of the muscles on the head differs among species. The rabbit has eight auricular muscles that are innervated by motoneurons originating from the facial nucleus located on the ventral side of the medulla oblongata. However, the distribution within the facial nucleus of the motoneurons that innervate each auricular muscle has not been defined clearly. In the present study, retrograde transport of horseradish peroxidase was used to identify groups of facial motoneurons in the rabbit. Our results show that the medial subnucleus of the facial nucleus projects primarily to the auricular muscles, and that each auricular muscle is innervated by a specific group of motoneurons distributed in a particular region of the medial subnucleus. This motoneuron patterning appears to be a species-specific characteristic of the innervation of the auricular muscles.

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Section: Distribution Of Hrp-labeled Neurons In the Facial Nucleuscontrasting

confidence: 47%

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confidence: 99%

Projection from the Facial Nucleus to the Auricular Muscles of Rabbits

Furutani

Sugita

2004

Okajimas Folia Anat. Jpn.

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“…The somatotropic representation of facial musculature has been described in the facial nuclei of rodents [5,9], rabbits [4,18], and cats [10]. The distribution of facial muscle motor neuron pools is somatotropic, lateral-to-medial in the coronal plane, with the more rostral muscles located more laterally in the facial motor nucleus and the more caudal muscles oriented more medially in the facial motor nucleus [4,5,9,11,18].…”

Section: Discussionmentioning

confidence: 99%

“…Although the mammalian facial musculature shows differences across species, similarities are seen in the projection system from the facial nucleus to the target muscle. The origin of the posterior auricular branch is in the medial subnucleus, while the superior and inferior buccolabialis originate from the lateral and ventrolateral subnuclei of the facial nucleus in the rat [5,19], opossum [1], cat [10], and dog [13]. Those generalized origins, accompanied by the morphologically distinct subdivisions, also exist in other mammals [3,4,15,17].…”

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“…The necessary neuronal pathways for respiration, mastication, and swallowing involve the facial neurons [2,12]. Projection from the facial nucleus to a facial muscular group has been identified in the mouse [9], rat [5], guinea pig [20], bat [3], brush-tailed possum [15], cat [10], rabbit [4,18], opossum [1], pig [11], and monkey [17]. Although the mammalian facial musculature shows differences across species, similarities are seen in the projection system from the facial nucleus to the target muscle.…”

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Comparative Histological Study of the Mammalian Facial Nucleus

Furutani

Sugita

2008

The Journal of Veterinary Medical Science

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ABSTRACT. We performed comparative Nissl, Klüver-Barrera and Golgi staining studies of the mammalian facial nucleus to classify the morphologically distinct subdivisions and the neuronal types in the rat, rabbit, ferret, Japanese monkey (Macaca fuscata), pig, horse, Risso's dolphin (Grampus griseus), and bottlenose dolphin (Tursiops truncatus). The medial subnucleus was observed in all examined species; however, that of the Risso's and bottlenose dolphins was a poorly-developed structure comprised of scattered neurons. The medial subnuclei of terrestrial mammals were well-developed cytoarchitectonic structures, usually a rounded column comprised of densely clustered neurons. Intermediate and lateral subnuclei were found in all studied mammals, with differences in columnar shape and neuronal types from species to species. The dorsolateral subnucleus was detected in all mammals but the Japanese monkey, whose facial neurons converged into the intermediate subnucleus. The dorsolateral subnuclei of the two dolphin species studied were expanded subdivisions comprised of densely clustered cells. The ventromedial subnuclei of the ferret, pig, and horse were richly-developed columns comprised of large multipolar neurons. Pig and horse facial nuclei contained another ventral cluster, the ventrolateral subnucleus. The facial nuclei of the Japanese monkey and the bottlenose dolphin were similar in their ventral subnuclear organization. Our findings show species-specific subnuclear organization and distribution patterns of distinct types of neurons within morphological discrete subdivisions, reflecting functional differences. KEY WORDS: facial nucleus, histology, mammal.J. Vet. Med. Sci. 70(4): 367-372, 2008 The facial musculature is responsible for a wide variety of motor movements, including eye blink, nasolabial, buccolabial, perioral, and auricular movements. Those movements are primarily initiated by motor neurons of the facial nucleus. The necessary neuronal pathways for respiration, mastication, and swallowing involve the facial neurons [2,12]. Projection from the facial nucleus to a facial muscular group has been identified in the mouse [9] [17]. Although the mammalian facial musculature shows differences across species, similarities are seen in the projection system from the facial nucleus to the target muscle. The origin of the posterior auricular branch is in the medial subnucleus, while the superior and inferior buccolabialis originate from the lateral and ventrolateral subnuclei of the facial nucleus in the rat [5,19], opossum [1], cat [10], and dog [13]. Those generalized origins, accompanied by the morphologically distinct subdivisions, also exist in other mammals [3,4,15,17]. However, many important species-specific differences are seen in the motor neurons innervating the nasolabial and buccolabial branches [3,5,11,17]. In particular, the facial muscles innervated by the buccolabial branch are important muscular hydrostats for animal food acquisition [11].The facial nucleus is a final outlet for innervati...

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Distribution of GABAergic and glycinergic premotor neurons projecting to the facial and hypoglossal nuclei in the rat

1997

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The distribution of inhibitory premotor neurons for the facial and hypoglossal nuclei was examined in the lower brainstem of the rat. A retrograde axonal tracing method with the fluorescent tracer, tetramethylrhodamine dextran amine (TMR-DA), was combined with immunofluorescence histochemistry for glutamic acid decarboxylase (GAD), i.e., the enzyme involved in gamma-aminobutyric acid synthesis, or glycine. In the rats injected with TMR-DA unilaterally into the facial or hypoglossal nucleus, the distribution of TMR-DA-labeled neurons showing GAD-like immunoreactivity (GAD/TMR-DA neurons) was essentially the same as that of TMR-DA-labeled neurons displaying glycine-like immunoreactivity (Gly/TMR-DA neurons). The distributions of GAD/TMR-DA and Gly/TMR-DA neurons in the rats injected with TMR-DA into the facial nucleus were also similar to those in the rats injected with TMR-DA into the hypoglossal nucleus. These neurons were seen most frequently in the lateral aspect of the pontine reticular formation, the supratrigeminal region, the dorsal aspect of the lateral reticular formation of the medulla oblongata, and the reticular regions around the raphe magnus nucleus and the gigantocellular reticular nucleus pars alpha, bilaterally with a slight dominance on the side ipsilateral to the injection site. A number of GAD/TMR-DA and Gly/TMR-DA neurons were also seen in the oral and interpolar subnuclei of the spinal trigeminal nucleus, bilaterally with a slight ipsilateral dominance. In the rats injected with TMR-DA into the facial nucleus, GAD/TMR-DA and Gly/TMR-DA neurons were also encountered in the paralemniscal zone of the midbrain tegmentum bilaterally with an apparent dominance on the side contralateral to the injection site. A large part of these inhibitory premotor neurons for the facial and hypoglossal nuclei and the excitatory ones may constitute premotor neuron pools common to the orofacial motor nuclei implicated in the control of integrated orofacial movements.

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Topographical representation of peripheral branches of the facial nerve within the facial nucleus: A HRP study in the cat

Cited by 91 publications

References 5 publications

Projection from the Facial Nucleus to the Auricular Muscles of Rabbits

Projection from the Facial Nucleus to the Auricular Muscles of Rabbits

Comparative Histological Study of the Mammalian Facial Nucleus

Distribution of GABAergic and glycinergic premotor neurons projecting to the facial and hypoglossal nuclei in the rat

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