WordNet

a part of the cell containing DNA and RNA and responsible for growth and reproduction (同)cell_nucleus, karyon
(astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail
any histologically identifiable mass of neural cell bodies in the brain or spinal cord
the positively charged dense center of an atom
supplies extrinsic muscles of the eye (同)oculomotor_nerve, nervus_oculomotorius, third_cranial_nerve

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中心,核 / (生物の)細胞核 / 原子核

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/11/03 10:11:41」(JST)

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The fibers of the oculomotor nerve arise from a nucleus in the midbrain, which lies in the gray substance of the floor of the cerebral aqueduct and extends in front of the aqueduct for a short distance into the floor of the third ventricle. From this nucleus the fibers pass forward through the tegmentum, the red nucleus, and the medial part of the substantia nigra, forming a series of curves with a lateral convexity, and emerge from the oculomotor sulcus on the medial side of the cerebral peduncle.

The nucleus of the oculomotor nerve does not consist of a continuous column of cells, but is broken up into a number of smaller nuclei, which are arranged in two groups, anterior and posterior. Those of the posterior group are six in number, five of which are symmetrical on the two sides of the middle line, while the sixth is centrally placed and is common to the nerves of both sides. The anterior group consists of two nuclei, an antero-medial and an antero-lateral .

The nucleus of the oculomotor nerve, considered from a physiological standpoint, can be subdivided into several smaller groups of cells, each group controlling a particular muscle.

A nearby nucleus, the Edinger-Westphal nucleus, is responsible for the autonomic functions of the oculomotor nerve, including pupillary constriction and lens accommodation.

Additional images

Nuclei of origin of cranial motor nerves schematically represented; lateral view.
Coronal section through mid-brain.
Transverse section of mid-brain at level of inferior colliculi.
Scheme showing central connections of the optic nerves and optic tracts.
Plan of oculomotor nerve.
Figure showing the mode of innervation of the Recti medialis and lateralis of the eye.
Vestibulo-ocular reflex

External links

Atlas of anatomy at UMich n2a4p4 - "Brainstem, Cranial Nerve Nuclei, Sagittal Section, Medial View"
BrainMaps at UCDavis Oculomotor nucleus

Oculomotor+nucleus at eMedicine Dictionary

UpToDate Contents

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1. 成人における第三脳神経（動眼神経）麻痺 third cranial nerve oculomotor nerve palsy in adults
2. 眼瞼下垂症の概要 overview of ptosis
3. 小児における第3脳神経（動眼神経）麻痺 third cranial nerve oculomotor nerve palsy in children
4. 成人における昏迷および昏睡 stupor and coma in adults

English Journal

Gaze shift duration, independent of amplitude, influences the number of spikes in the burst for medium-lead burst neurons in pontine reticular formation.

Walton MM, Freedman EG.SourceDepartment of Neurobiology and Anatomy, School of Medicine and Dentistry, University of Rochester, 601 Elmwood Ave., Box 603, Rochester, NY, 14642, USA, Mark_Walton@urmc.rochester.edu.
Experimental brain research. Experimentelle Hirnforschung. Experimentation cerebrale.Exp Brain Res.2011 Oct;214(2):225-39. Epub 2011 Aug 14.
Changes in the direction of the line of sight (gaze) allow successive sampling of the visual environment. Saccadic eye movements accomplish this goal when the head does not move. Medium-lead burst neurons (MLBs) in the paramedian pontine reticular formation (PPRF) discharge a high frequency burst of
PMID 21842410

Responses of medial rectus motoneurons in monkeys with strabismus.

Joshi AC, Das VE.SourceCollege of Optometry, University of Houston, Houston, Texas.
Investigative ophthalmology & visual science.Invest Ophthalmol Vis Sci.2011 Aug 24;52(9):6697-705. Print 2011.
Purpose. Monkeys reared under conditions of alternating monocular occlusion during their first few months of life show large horizontal strabismus, "A" patterns, and dissociated vertical deviation. "A" patterns manifest as an inappropriate horizontal component in the deviated eye during vertical eye
PMID 21743010

Japanese Journal

症例報告 Vertical one-and-a-half syndromeから両側垂直性注視麻痺に進展した片側中脳・視床梗塞の1例

鈴木圭輔,小鷹昌明,辰元宗人 [他]
Brain and nerve 60(1), 92-96, 2008-01
NAID 40015804623

いわゆる Transitory alternating saccades の波形分析

石丸ひとみ,渡辺行雄,伏木宏彰,將積日出夫
Equilibrium research 66(2), 59-63, 2007-04-01
… TAS may be a result of the pathological oculomotor findings associated with lesions in the vicinity of the midline of the cerebellum. …
NAID 10021290114

Related Pictures

★リンクテーブル★

リンク元	「動眼神経核」
関連記事	「oculomotor」

「動眼神経核」

Brain: Oculomotor nucleus
	Section through superior colliculus showing path of oculomotor nerve.
	The cranial nerve nuclei schematically represented; dorsal view. Motor nuclei in red; sensory in blue. (Oculomotor is "III")
Latin	nucleus nervi oculomotorii
Gray's	subject #188 807
NeuroNames	hier-483