大泉門
WordNet
- of or near the head end or toward the front plane of a body
- earlier in time (同)prior
PrepTutorEJDIC
- (場所などが)前の,前部の;(…より)前に位置する《+『to』+『名』》 / (時・事件などが)以前の,先の;(…より)前の《+『to』+『名』》
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/09/30 21:04:19」(JST)
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Anterior fontanelle |
Skull at birth, showing frontal and occipital fonticuli.
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Human anterior fontanelle 1 month
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Details |
Latin |
fonticulus anterior |
Identifiers |
Gray's |
p.196 |
Dorlands
/Elsevier |
f_12/12372487 |
TA |
A02.1.00.028 |
FMA |
75439 |
Anatomical terminology |
The anterior fontanelle (bregmatic fontanelle, frontal fontanelle) is the largest fontanelle, and is placed at the junction of the sagittal suture, coronal suture, and frontal suture; it is lozenge-shaped, and measures about 4 cm in its antero-posterior and 2.5 cm in its transverse diameter. The fontanelle allows the skull to deform during birth to ease its passage through the birth canal and for expansion of the brain after birth.
While the posterior and lateral fontanelles are obliterated by about six months after birth, the anterior is not completely closed until about the middle of the second year. Full ossification starts in the late twenties and finishes before the age of 50 .
Contents
- 1 Clinical significance
- 2 Additional Images
- 3 See also
- 4 External links
Clinical significance
The anterior fontanelle is useful clinically. Examination of an infant includes palpating the anterior fontanelle. A sunken fontanelle indicates dehydration, whereas a very tense or bulging anterior fontanelle indicates raised intracranial pressure. However, this is not a certain indicator for raised pressure as prolonged crying by the baby may produce the same effect. A full anterior fontanelle may also be indicative of neonatal meningitis, specifically acute bacterial meningitis.
Additional Images
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Skull of newborn. Anterior view.
See also
External links
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Wikimedia Commons has media related to Anterior fontanelle. |
- -556793806 at GPnotebook
- Anatomy image: skel/fetal2 at Human Anatomy Lecture (Biology 129), Pennsylvania State University
Compound structures of skull
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Neurocranium |
- Calvaria
- Asterion
- Pterion
- Stephanion
- Inion
- Bregma
- Lambda
- Fossae
- anterior
- middle
- posterior
- cranial cavity
- Base of skull
- Fontanelle
- anterior
- posterior
- sphenoidal
- mastoid
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Facial skeleton |
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Both |
- dacryon
- zygomatic arch
- temporal fossa
- infratemporal fossa
- pterygomaxillary fissure
- pterygopalatine fossa
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Index of bones and cartilage
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Description |
- Anatomy
- bones
- skull
- face
- neurocranium
- compound structures
- foramina
- upper extremity
- torso
- pelvis
- lower extremity
- Physiology
- Development
- Cells
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Disease |
- Congenital
- Neoplasms and cancer
- Trauma
- Other
- Symptoms and signs
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Treatment |
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UpToDate Contents
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English Journal
- Study on the influence of the fetus head molding on the biomechanical behavior of the pelvic floor muscles, during vaginal delivery.
- Silva ME1, Oliveira DA1, Roza TH1, Brandão S2, Parente MP3, Mascarenhas T4, Natal Jorge RM1.
- Journal of biomechanics.J Biomech.2015 Jun 25;48(9):1600-5. doi: 10.1016/j.jbiomech.2015.02.032. Epub 2015 Feb 26.
- Pelvic floor injuries during vaginal delivery are considered a significant risk factor to develop pelvic floor dysfunction. The molding of the fetus head during vaginal delivery facilitates the labor progress, since it adjusts to the birth canal geometry. In this work, a finite element model was use
- PMID 25757665
- In-depth phenotyping of a Donnai-Barrow patient helps clarify proximal tubule dysfunction.
- Dachy A1, Paquot F, Debray G, Bovy C, Christensen EI, Collard L, Jouret F.
- Pediatric nephrology (Berlin, Germany).Pediatr Nephrol.2015 Jun;30(6):1027-31. doi: 10.1007/s00467-014-3037-7. Epub 2015 Mar 31.
- BACKGROUND: The megalin/cubilin/amnionless complex is essential for albumin and low molecular weight (LMW) protein reabsorption by renal proximal tubules (PT). Mutations of the LRP2 gene encoding megalin cause autosomal recessive Donnai-Barrow/facio-oculo-acoustico-renal syndrome (DB/FOAR), which is
- PMID 25822460
- Does being born small-for-gestational-age affect cerebellar size in neonates?
- Yalin Imamoglu E1, Gursoy T, Sancak S, Ovali F.
- The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians.J Matern Fetal Neonatal Med.2015 May 6:1-5. [Epub ahead of print]
- OBJECTIVE: To investigate how cerebellar vermis height (CVH) and transverse cerebellar diameter (TCD) measurements are affected in SGA neonates.METHODS: A total of 176 [88 SGA and 88 appropriate for gestational age (AGA)] neonates between 26 and 42 weeks of gestation were included. Midsagittal plane
- PMID 25758632
Japanese Journal
- 先天性皮膚弛緩症と大脳皮質形成異常を伴ったCongenital Disorder of Glycosylation typeIIの1例
Related Links
- The diagnosis of an abnormal fontanel requires an understanding of the wide variation of normal. At birth, an infant has six fontanels. The anterior fontanel is the largest and most important for clinical evaluation. The ...
- In one example from the 1980s, Smith, Humm, and Fontanel (1985, 241) note that the Belgian purchase of military vehicles from Bombardier of Canada was tied to landing rights in Toronto for the Belgian commercial airline, Sabena.
Related Pictures
★リンクテーブル★
[★]
- 英
- anterior fontanelle (KA), anterior fontanel (HT), bregmatic fontanel
- 同
- 前泉門
- ラ
- fonticulus anterior
- 関
- ブレグマ、小泉門
- 閉鎖時期:2歳、1歳半(SPE.50) ← 文献によってまちまち。
- 大泉門は菱形のような形をしているが、大泉門径は交叉しあう2片の長さの和を2で除したものである。(QB.O-73)
臨床関連
[★]
- 関
- anterioris、anteriorly、before、fore、former、pre、prior