WordNet

move with abrupt, seemingly uncontrolled motions; "The patients legs were jerkings" (同)twitch
(mechanics) the rate of change of acceleration
an abrupt spasmodic movement (同)jerking, jolt, saccade
raising a weight from shoulder height to above the head by straightening the arms
a dull stupid fatuous person (同)dork
throw or toss with a quick motion; "flick a piece of paper across the table"; "jerk his head" (同)flick
holding device consisting of one or both of the opposing parts of a tool that close to hold an object
the bones of the skull that frame the mouth and serve to open it; the bones that hold the teeth
the part of the skull of a vertebrate that frames the mouth and holds the teeth
of animals having jaws of a specified type

PrepTutorEJDIC

(急に)『ぐいっと引っぱる』(『押す』,『ねじる』,『投げる』)『こと』 / (筋肉の)反射運動;けいれん / 《米俗》うぶな人;まぬけ / (重量挙げの)ジャーク / 《運動を表す副詞[句]を伴って》…‘を'『急に引っぱる』(『押す』,『ねじる』,『投げる』) / …‘を'ぶっきらぼうに(投げ出すように)言う《+『out』+『名,』+『名』+『out』》 / 『急に』(『ぐいっと』)『動く』
〈特に牛肉〉‘を'細切りにして干し肉にする
〈C〉(上・下の)『あご』 / 《複数形で》口 / 〈C〉下あごのかっこう(感じ) / 《複数形で》あごに似た物;(谷・海峡などの)狭い入口 / 〈U〉《話》おしゃべり;(長い)お説教 / (人に)しゃべる,(特に)くどくど言う;(人に)お説教をする《+『at』+『名』〈人〉》

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/10/07 19:04:01」(JST)

wiki en

The jaw jerk reflex or the masseter reflex is a stretch reflex used to test the status of a patient's trigeminal nerve (CN V).^[1] The mandible—or lower jaw—is tapped at a downward angle just below the lips at the chin while the mouth is held slightly open. In response, the masseter muscles will jerk the mandible upwards. Normally this reflex is absent or very slight. However in individuals with upper motor neuron lesions the jaw jerk reflex can be quite pronounced.

The jaw jerk reflex can be classified as a dynamic stretch reflex. As with most other reflexes, the response to the stimulus is monosynaptic, with sensory neurons of the trigeminal mesencephalic nucleus sending axons to the trigeminal motor nucleus, which in turn innervates the masseter. This reflex is used to judge the integrity of the upper motor neurons projecting to the trigeminal motor nucleus. Both the sensory and motor aspects of this reflex are through CN V.

It is not part of a standard neurological examination. It is performed when there are other signs of damage to the trigeminal nerve.

References

Nolte, J. The Human Brain, 5th ed. Mosby: Missouri; 2002, p.307. ISBN 0-323-01320-1
Blumenfeld, H. Neuroanatomy Through Clinical Cases. Sinauer Associates: Massachusetts; 2002, p. 484. ISBN 0-87893-060-4

Footnotes

^ "Neurological Examination". Retrieved 2008-02-17.

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

1. 成人における詳細な神経学的検査 the detailed neurologic examination in adults
2. 小児における顎骨骨折 jaw fractures in children
3. 律動眼振 jerk nystagmus
4. 成人における選択的脊椎手術のための麻酔 anesthesia for elective spine surgery in adults
5. 小児における、アデノイド切除同時施行例を含む扁桃摘出に対する麻酔 anesthesia for tonsillectomy with or without adenoidectomy in children

English Journal

Brainstem reflexes in patients with familial dysautonomia.

Gutiérrez JV1, Norcliffe-Kaufmann L2, Kaufmann H3.
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology.Clin Neurophysiol.2015 Mar;126(3):626-33. doi: 10.1016/j.clinph.2014.06.028. Epub 2014 Jul 3.
OBJECTIVE: Several distinctive clinical features of patients with familial dysautonomia (FD) including dysarthria and dysphagia suggest a developmental defect in brainstem reflexes. Our aim was to characterize the neurophysiological profile of brainstem reflexes in these patients.METHODS: We studied
PMID 25082092

Temporomandibular joint articulations on working side during chewing in adult females with cross-bite and mandibular asymmetry.

Yashiro K1, Iwata A, Takada K, Murakami S, Uchiyama Y, Furukawa S.
Journal of oral rehabilitation.J Oral Rehabil.2015 Mar;42(3):163-72. doi: 10.1111/joor.12266. Epub 2014 Dec 26.
Influence of mandibular asymmetry and cross-bite on temporomandibular joint (TMJ) articulation remained unknown. This study aimed to investigate whether/how the working-side condylar movement irregularity and articular spaces during chewing differ between patients with mandibular asymmetry/cross-bit
PMID 25545582

Oculoleptomeningeal Amyloidosis associated with transthyretin Leu12Pro in an African patient.

McColgan P1, Viegas S, Gandhi S, Bull K, Tudor R, Sheikh F, Pinney J, Fontana M, Rowczenio D, Gillmore JD, Gilbertson JA, Whelan CJ, Shah S, Jaunmuktane Z, Holton JL, Schott JM, Werring DJ, Hawkins PN, Reilly MM.
Journal of neurology.J Neurol.2015 Jan;262(1):228-34. doi: 10.1007/s00415-014-7594-2. Epub 2014 Dec 9.
Oculoleptomeningeal amyloidosis is a rare manifestation of hereditary transthyretin (TTR) amyloidosis. Here, we present the first case of leptomeningeal amyloidosis associated with the TTR variant Leu12Pro mutation in an African patient. A 43-year-old right-handed Nigerian man was referred to our ce
PMID 25488473

Japanese Journal

Objective Assessment of Masticatory Jaw Movements As an Outcome of Dental Treatment

YASHIRO Kahtaro,TAKADA Kenji
Dentistry in Japan 42, 73-77, 2006-03-01
NAID 10019595450

Neural mechanisms controlling jaw-jerk reflex in the cat

PAIK S. K.
Neuroreport 16, 1565-1568, 2005
NAID 30009533218

Model-based analysis of jaw-movement kinematics by using jerk-optimal criterion : simulations of human chewing cycles

YASHIRO K.
J. Electromyograph Kinesiol. 15, 516-526, 2005
NAID 30007777797

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