Connective Tissue Learning video

Connective Tissue Diseases Presentation

Connective tissue diseases, sjogren's syndrome, idiopathic inflammatory, scleroderma

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dense elastic tissue

This tissue has a preponderance of elastic fibers. Examine the longitudinal and cross sections of ligamentum nuchae (ungulate) on slide #10 (even boxes). This is an elastic ligamentprepared with resorcin fuchsin which stains elastin purple. It is very difficult to distinguish the cells. Observe that the tissue consists of parallel bundles of thick elastic fibers held together by loose C.T. containing some blood vessels. Collagen fibers stain pink. The arrangement of elastic fiber bundles and loose collagenous connective tissue is more easily seen in the cross section. Note that these elastic fibers are much thicker than those of loose C.T. Most other ligaments do not have a preponderance of elastic fibers, and are similar to tendon in composition, although not as regularly arranged.

Connective Tissue

Connective Tissue video

Connective tissue video from youtube

Connective tissue is made up of cells and fibers in a "jelly-like" ground substance. Present throughout the body, connective tissue holds parts together and acts as packing. There are several kinds of connective tissue, which differ in the amount and type of cells and fibers in their makeup. Most common is loose areolar tissue, which contains most of the basic connective tissue components or ground substance: Mast cells, collagen fibers, macrophage cells, fibroblasts, blood supply, fat cells, elastic fibers, reticulin, nerve supply and plasma cells. Widely distributed throughout the body, areolar tissue forms binding sheaths around muscles, nerves and blood vessels, and is present within organs as filling materials. Tendons, a dense connective tissue which attaches muscle to bone, are bundles of inelastic collagen fibers (1) made by fibroblasts (2) in the ground substance. Adipose tissue, another connective tissue of the body, is composed mostly of fat cells. It cushions internal organs, forms an insulating layer under the skin and provides a fuel store. Cartilage is also a connective tissue found in the body, but differs from other connective tissue because it has no blood vessels.

Connective tissue types

Adult connective tissue types :
A-loose connective tissue: aerial, fatty reticle
B-dense: Regular and irregular and elastic types
C-Cartilage: hyaline, and elastic fibrocartilage types
D-bone (bone) (see Module musculo-skeletal)
E-Sang (vascular tissue), the hematopoietic tissue, lymph tissue