invagination

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invagination

[in-vag″ĭ-na´shun]

1. the infolding of one part within another part of a structure, as of the blastula during gastrulation.

basilar invagination a developmental deformity of the occipital bone and upper end of the cervical spine in which the latter appears to have pushed the floor of the occipital bone upward; see also platybasia. Called also basilar impression.

in·vag·i·na·tion

(in-vaj'i-nā'shŭn),

1. The ensheathing, enfolding, or insertion of a structure within itself or another.
See also: introversion, intussusception.

2. The state of being invaginated.
See also: introversion, intussusception.

Farlex Partner Medical Dictionary © Farlex 2012

invagination

(ĭn-văj′ə-nā′shən)

1. The act or process of invaginating or the condition of being invaginated.

2. An invaginated organ or part.

3. Embryology The infolding of a portion of the outer layer of a blastula in the formation of a gastrula.

in·vag·i·na·tion

(in-vaj'i-nā'shŭn)

1. The ensheathing, enfolding, or insertion of a structure within itself or another.

2. The state of being invaginated.
See also: introversion, intussusception

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

invagination

A folding into or ensheathing. The process of invagination occurs in the early development of the embryo when part of the BLASTODERM folds inward so that the hollow sphere becomes cup-shaped and double-walled.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

invagination

an inpushing of a layer of cells, as in GASTRULATION or in the formation of the PROCTODAEUM.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

in·vag·i·na·tion

(in-vaj'i-nā'shŭn)

Ensheathing, enfolding, or insertion of a structure within itself or another.

Medical Dictionary for the Dental Professions © Farlex 2012

References in periodicals archive ?

The Ficinia-type embryo only differs from the Cyperus-type by the presence of an invagination above the root cap.

Phylogeny and Systematics of Cyperaceae, the Evolution and Importance of Embryo Morphology

A patient with celiac disease who presented with abdominal pain, vomiting, and invagination was examined in this case report.

A Rare Symptom of Celiac Disease: Invagination

During bud invagination, FGF signaling also regulates PITX2, an important transcription factor, whose expression in the oral epithelium is initially controlled by FGF8 and BMP4.

The Role of Fibroblast Growth Factors in Tooth Development and Incisor Renewal

Initiation of invagination of a portion of bowel into an adjacent segment causing intussusception is generally caused by any focal disturbances in intestinal motility which might be caused by enteritis, intestinal parasitism, intestinal neoplasia, administration of drugs that affects gastro intestinal motility and sudden changes in diet (Anderson and Rings, 2009).

Surgical Management of Intussusception - A Clinical Study of Five Bovines

Several papers have reported that when the invagination has no communication with the main root canal, the pulp in the main canal remained healthy with successful non-surgical endodontic treatment of the necrotic invaginated area (9).

Incidental Finding of Bilateral Dens Invaginatus in the Maxillary Lateral Incisors and Role of Cone Beam Computed Tomography in Diagnose and Treatment / Rostlantisal Bir Bulgu Olarak Maksiller Laterai Dislerde Dens Invajinatus, Tani ve Tedovide Konik Isinli Bilgisayarli Tomografinin Rolu

Intussusception is the invagination of a bowel loop with its mesenteric fold (intussusceptum) into the lumen of a contiguous portion of bowel (intussuscepiens) as a result of peristalsis.

Intussusception in adults: is there a lead point?

De Camilli, "Dynamin and the actin cytoskeleton cooperatively regulate plasma membrane invagination by BAR and F-BAR proteins," Developmental Cell, vol.

Mold Alkaloid Cytochalasin D Modifies the Morphology and Secretion of fMLP-, LPS-, or PMA-Stimulated Neutrophils upon Adhesion to Fibronectin

Despite some surgical strategies that have been shown to have a positive effect on decreasing POPF, including invagination anastomosis, duct-to-mucosa anastomosis [4, 5], and new style of digestive tract reconstruction, none of these methods can completely prevent POPF.

Are Internal or External Pancreatic Duct Stents the Preferred Choice for Patients Undergoing Pancreaticoduodenectomy? A Meta-Analysis

This glandular metaplasia may also occur without urothelial invagination, resulting in a variable cystoscopic appearance: sessile, papillary, nodular, or ulcerated.

Primary Signet-Ring Cell Carcinoma of the Urinary Bladder Successfully Managed with Radical Cystectomy in a Young Patient

In microautophagy, lysosomes engulf the cytoplasmic material by inward invagination of the lysosomal membrane, while chaperone mediated autophagy is facilitated by HSP70, cochaperones, and the lysosomal-associated membrane protein type-2A.

Oxidative Stress and Autophagy in Metabolism and Longevity

Histopathological examination revealed the cornoid lamella with invagination of the epidermis; interruption of the granular layer; dense lymphocytic infiltrate, with no atypical cells, in the superficial dermis beneath the cornoid lamella (Figure 8).

Porokeratosis--report of two cases

2A), the radiation only group had swelling in mitochondria, decrease and disorder in the arrangement of cristae, decrease in number of the short and irregular microvilli, invagination in the nuclei, vesiculation in granulated endoplasmic reticulum, a transition from granulated endoplasmic reticulum to smooth endoplasmic reticulum, and enlargement within the intercellular area (Figs.

Protective Effects of Vitamin E and Selenium Administration on Small Intestinal Damage Prior to Abdominal Radiation

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