Loose Connective Tissue

2020 ◽  
Author(s):  
Keyword(s):  
Connective Tissue ◽  
Loose Connective Tissue

scholarly journals I. A contribution to the anatomy of the ductless glands and lymphatic system of the angler fish ( Lophius piscatorius )

1927 ◽  
Vol 215 (421-430) ◽  
pp. 1-56 ◽  
Keyword(s):  
Connective Tissue ◽  
Lymphatic System ◽  
Loose Connective Tissue ◽  
Mode Of Life ◽  
Better Than ◽  
Considerable Size

The Angler ( Lophius piscatorius ) is a fish much modified for a bottom habit, and apart from many peculiarities of form and structure associated with this particular mode of life, is remarkable for the looseness of its skin and the abundance of soft connective tissue that separates it from the underlying fascia and muscles. Within this layer of loose connective tissue lie many of the larger trunks of the lymphatic system, mostly of very considerable size and easy to inject. The fish thus furnishes material better than most for the study of this system.

Histopathology of the A1 Pulley in Adult Trigger Fingers

2007 ◽  
Vol 32 (5) ◽  
pp. 556-559 ◽  
Author(s):  
M. C. SBERNARDORI ◽  
P. BANDIERA
Keyword(s):  
Connective Tissue ◽  
Middle Layer ◽  
Laminar Structure ◽  
Loose Connective Tissue ◽  
Control Series ◽  
Outermost Layer ◽  
Additional Layer ◽  
Transmission Electron ◽  
Electron Microscopes ◽  
A1 Pulley

The histopathology of the central parts of 40 A1 pulleys from adult patients with primary trigger fingers was studied using light and transmission electron microscopes and the findings were compared with those in a control series of 10 normal A1 pulleys. The evaluation of the normal A1 pulley revealed a bi-laminar structure. The deepest layer was composed of dense normal connective tissue. The outermost layer was formed by loose connective tissue. In trigger digits, it was possible to identify a tri-laminar structure. The deepest layer was composed of irregular connective tissue, formed by small collagen fibres and abundant extracellular matrix. A considerable amount of chondroid-metaplasia was present in this layer. The middle layer contained dense, normal connective tissue with some fibrocytes. The outermost layer was formed of loose connective tissue. In conclusion, there was an additional layer in the A1 pulley in pathological cases which was not present in normal pulleys.

scholarly journals Distribution of fibroblast surface antigen in the developing chick embryo.

1975 ◽  
Vol 142 (1) ◽  
pp. 41-49 ◽  
Author(s):  
E Linder ◽  
A Vaheri ◽  
E Ruoslahti ◽  
J Wartiovaara
Keyword(s):  
Chick Embryo ◽  
Connective Tissue ◽  
Basement Membranes ◽  
Loose Connective Tissue ◽  
Extracellular Medium ◽  
Liver Sinusoids ◽  
Stage Of Development ◽  
Parenchymal Cells ◽  
Fibrillar Network

Fibroblast surface (SE) antigen is present in fibrillar surface structures of cultured normal fibroblasts, shed to the extracellular medium, and is also found in circulation (serum and plasma). Malignant fibroblasts (transformed by viruses) do not express SF antigen on the cell surface. In this study the in vivo differentiation and distribution of SF antigen has been investigated in the developing chick embryo using cryostat sections and immunofluorescence. The major findings were: (a) SF antigen was detectable in the loose connective tissue of very early (2-to 3-day old) embryos. (b) Condensation of SF antigen was seen in various boundary membranes such as the glomerular and tubular basement membranes of the kidney, the boundary membranes of the notochord, yolk sac, and vitelline membranes and liver sinusoids. (c) SF antigen was found to be cell-type specific. It was seen as a fibrillar network in the loose connective tissue of different organs but not in the parenchymal cells. It was not found in muscle cells at any stage of development. (d) The antigen was present in the undifferentiated mesenchymal cells of the kidney; but not found after their development into epithelial cells of the secretory tubules. (e) Both in vivo and in fibroblast cultures SF antigen was distributed as a fibrillar network. These data indicate that SF antigen is a "differentiation antigen" restricted to certain cells of mesenchymal origin and character, and that is accumulates in the connective tissue during embryogenesis.

Light and Scanning Electron Microscopy of Human Spinal Ligaments

1985 ◽  
Vol 55 ◽  
Author(s):  
L.-H. Yahia ◽  
G. Drouin ◽  
C.-H. Rivard
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Connective Tissue ◽  
Idiopathic Scoliosis ◽  
Blood Vessels ◽  
Structural Changes ◽  
Loose Connective Tissue ◽  
Morphological Studies ◽  
Spinal Ligaments ◽  
Scanning Electron

ABSTRACTSpinal ligaments were obtained from normal and scoliotic individuals. Detailed morphological studies were carried out on the yellow, interspinous and supraspinous ligaments by light and scanning electron microscopy. Normal yellow ligaments are mostly constituted of dense elastin fibers with only a few collagen fibers and sparse blood vessels, while in normal interspinous and supraspinous ligaments, the presence of collagen is highly dominant. In the latter structures, the collagen fascicles are characterized by a regular waviness morphology. The fibrils constituting the fascicles appear either parallel or helical with respect to the fascicle axis. Structural changes are observed in the spinal ligaments of patients with congenital as well as idiopathic scoliosis. For yellow ligaments, only slight differences are found between normal and scoliotic specimens. However, alterations in collagen waviness and architecture are observed mainly in the supraspinous ligaments and to a lesser extent in the interspinous ligaments. In addition, increases in the cellularity, loose connective tissue and vessels are found in both forgoing ligaments. These results indicate that the more pronounced scoliosis-related changes occur in ligaments having the farthest distance from the axis of flexion-rotation.

scholarly journals The Challenging Diagnosis of Primordial Odontogenic Tumor

2019 ◽  
Vol 2019 ◽  
pp. 1-4 ◽  
Author(s):  
Lucas Novaes Teixeira ◽  
Cristiane Furuse ◽  
Fabrício Passador Santos ◽  
Andresa Borges Soares ◽  
Eder Magno Ferreira de Oliveira ◽  
...  
Keyword(s):  
Connective Tissue ◽  
Young Patients ◽  
Odontogenic Tumor ◽  
Columnar Epithelium ◽  
Anatomic Site ◽  
Loose Connective Tissue ◽  
Similar Morphology ◽  
Dental Papilla ◽  
Unerupted Tooth ◽  
Primordial Odontogenic Tumor

Primordial odontogenic tumor (POT) is a benign mixed odontogenic tumor comprised of a loose connective tissue with a similar morphology with dental papilla and exhibiting in its periphery the presence of a columnar epithelium. POT occurs in young patients and typically is associated with an unerupted tooth, with the mandible being the main anatomic site of occurrence. The present manuscript is aimed at describing a new case of POT and reviewing the main biologic findings related to this odontogenic tumor.

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