WordNet

a natural opening or perforation through a bone or a membranous structure (同)hiatus
marine microorganism having a calcareous shell with openings where pseudopods protrude (同)foraminifer

PrepTutorEJDIC

(骨・植物などの)孔(こう),開口

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/06/29 10:33:42」(JST)

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The mastoid foramen is a large hole in the posterior border of the temporal bone. It transmits a Mastoid emissary vein to the sigmoid sinus and a small branch of the occipital artery, the posterior meningeal artery to the dura mater.

Variations

The position and size of this foramen are very variable; it is not always present; sometimes it is situated in the occipital bone, or in the suture between the temporal and the occipital.

It transmits (1) an emissary vein connecting the sigmoid sinus with the posterior auricular vein and (2) a meningeal branch of the occipital artery

Additional images

Base of skull. Inferior surface.

External links

Mastoid+foramen at eMedicine Dictionary
Anatomy diagram: 34257.000-1 at Roche Lexicon - illustrated navigator, Elsevier
Anatomy diagram: 34257.000-2 at Roche Lexicon - illustrated navigator, Elsevier
Akram Abood Jaffar: Personal website, Anatomical variations

This article incorporates text from a public domain edition of Gray's Anatomy.

This musculoskeletal system article is a stub. You can help Wikipedia by expanding it.

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1. 卵円孔開存 patent foramen ovale
2. 小児における、心房中隔欠損（ASD）の分類および孤立性ASDの臨床的特徴および診断 classification of atrial septal defects asds and clinical features and diagnosis of isolated asds in children
3. 成人における心房中隔異常（PFO、ASD、およびASA）および脳塞栓症のリスク atrial septal abnormalities pfo asd and asa and risk of cerebral emboli in adults
4. 成人における心房中隔欠損症の臨床症状および診断 clinical manifestations and diagnosis of atrial septal defects in adults
5. 成人における脳卒中予防のための心房中隔異常（PFO、ASDおよびASA）の治療 treatment of atrial septal abnormalities pfo asd and asa for prevention of stroke in adults

Japanese Journal

ニホンカモシカ(Capricornis crispus)の骨格に関する研究-4-頭蓋(頭蓋骨・顔面骨)について

松尾信一,森下芳臣
信州大学農学部紀要 22(2), p99-138, 1985-12
… squamous part, nuchal crest, external occipital protuberance, external occipital crest, foramen magnum, occipital condyles, paracondyloid process (jugular process was used on many anatomical textbooks of the domestic animals), muscular tubercles. … ala, optic groove, optic canal, sella turcica, dorsum sellae, foramen ovale, foramen orbitorotundum. …
NAID 120005459972

側頭骨ノ耳科學上重要ナル諸點ノ頭蓋ニ對スル立體的位置ニ就テ

竹久正己
京都府立医科大学雑誌 36(1/2/3/4), 345-"365-2", 1942
… In bezug auf die Ohraugen-, Porionfrontal-, Mediansagittal- und Porionsagittalebene wurden bei 60 Personen (♂ 30, ♀ 30) bestimmte Punkte an den folgenden Teilen des Schlafenbeins gemessen: Processus mastoides, Foramen stylomastoideum, Spina supra meatum, Porus acusticus internes, Apertura interna canaliculi vestibuli, Basis cochleae, Crista pyramidis und Foramen mastoideum. …
NAID 110007120366

Über das Foramen mastoideum.

Inumaru Harumi
Folia Anatomica Japonica 3(4-5), 229-238, 1925
NAID 130001933228

「乳突孔」

Mastoid foramen
	Left temporal bone. Inner surface. (Mastoid foramen labeled at bottom left.)
	Base of the skull. Upper surface. (Temporal bone is pink, and label for mastoid foramen is at left, second from the bottom.)
Latin	foramen mastoideum
Gray's	p.141
	Anatomical terms of bone