Communications Between the Facial and Trigeminal Nerves in Certain Mammals

Bowden, Ruth E. M.; Mahran, Z. Y.; Gooding, M. R.

doi:10.1111/j.1469-7998.1960.tb05868.x

Cited by 14 publications

(2 citation statements)

References 9 publications

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“…12 Branches of the CN V and facial CN VII make frequent anastomoses throughout their anatomic regions, and these anastomoses are known to be consistent throughout the order of mammals. 13,14 Some of the communication is to support reflexes and proprioception, but others appear to form sensory pathways. 15,16 Some somatic sensation is maintained even after transection of the sensory root of CN V. Neural pathways remaining to transmit the sensation include CN VII and the motor root of CN V. 17 Facial neuralgia in humans, which is resolvable by sectioning the connection between CNN VII and VIII (nervous intermedius), has been described.…”

Section: Figurementioning

confidence: 99%

“…18 Additionally, the histopathologic appearance of CN VII also demonstrates multiple types of nerve fibers, some typical of motor innervation, others consistent with afferent sensory fibers. 14 In myelinated nerves, signals are transmitted via saltatory conduction, with membrane depolarization occurring at the unmyelinated Nodes of Ranvier. Even if partially affected by anesthetic agents, electrical signals can travel along myelin and "jump" nodes, allowing the signal to propagate, especially if a grouping of several weak signals occurs at an unblocked node.…”

Section: Figurementioning

confidence: 99%

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Area of Desensitization following Mental Nerve Block in Dogs

Krug

Losey

2011

J Vet Dent

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Regional nerve blocks are commonly used to provide analgesia for dental and oral surgical procedures. The purpose of this study was to demarcate the areas of the mandible that would be desensitized by application of the mental nerve block. Seven healthy mixed-breed dogs were anesthetized for an annual dental examination and professional teeth cleaning procedure. Bupivacaine HCl (0.4 ml/ m2) was administered at one middle mental foramen based on previously described techniques for the mental nerve block. A noxious stimulus was applied at 23 predetermined ipsilateral mandibular locations using pressure from a mosquito hemostat on the mucocutaneous junction (MCJ) and a dental curette on the vestibular mucogingival line (MGL) at the incisor canine, and premolar teeth; and, the mesial and distal aspects of the first molar tooth. A thermal stimulus using a refrigerant spray on a cotton ball was applied to the ipsilateral canine, third premolar and fourth premolar teeth; and, the mesial and distal aspects of the first molar tooth. Demonstration of nociception or anesthesia was noted and the responses tabulated. The area of desensitized tissues was smaller than expected and highly variable within the study group. In conclusion, the unilateral mental nerve block does not reliably provide generalized desensitization to tissues of the incisive and rostral regions of the mandible. Although the mental nerve block is recommended, other modes of analgesia should be emphasized for surgical and dental procedures involving these areas.

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Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Area of Desensitization following Mental Nerve Block in Dogs

Krug

Losey

2011

J Vet Dent

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Trigeminal-Facial Nerve Communications: Their Function in Facial Muscle Innervation and Reinnervation

Baumel¹

1974

Archives of Otolaryngology - Head and Neck Surgery

116

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Peripheral development of avian trigeminal nerves

Kuratani

Tanaka

1990

Am. J. Anat.

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Development of the trigeminal nerve branches was studied in stage -17 to -27 chick embryos stained with an antibody to neurofilament protein. The following findings were obtained. 1) Ectopic ganglia transiently appeared in the ectoderm of the supraorbital region and were considered as remnant ophthalmic-placode-derived ganglia. 2) Most of the cutaneous sensory branches of the maxillomandibular nerve arose from a loosely arborized mass of neurites, provisionally termed the maxillomandibular reticulum, in which the fibers intermingled in a seemingly random fashion. 3) The growth of the trigeminal branches was mainly correlated with the development of the facial processes; however, irregular communications between different groups of branches were observed, suggesting that topographical organization of the peripheral branches is not rigid in early stages. 4) From the ophthalmic nerve around stage 23, transient dorsal rami developed and were distributed in the mesenchymal space, the cavum epiptericum, and passed near the ectoderm. Their homology with the rr. tentorii in human anatomy is suggested.

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Communications Between the Facial and Trigeminal Nerves in Certain Mammals

Cited by 14 publications

References 9 publications

Area of Desensitization following Mental Nerve Block in Dogs

Area of Desensitization following Mental Nerve Block in Dogs

Trigeminal-Facial Nerve Communications: Their Function in Facial Muscle Innervation and Reinnervation

Peripheral development of avian trigeminal nerves

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