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Schematic representation of the composition of loose connective tissue. It is a pliable, mesh-like tissue with a fluid matrix and functions to cushion and protect body organs. Fibroblasts are widely dispersed in this tissue; they are irregular branching cells that secrete strong fibrous proteins and proteoglycans as an extracellular matrix.
Loose connective tissue fibroblasts: Corneal fibroblasts (corneal keratocytes) Tendon fibroblasts: Bone marrow reticular tissue fibroblasts: Other nonepithelial fibroblasts: Hepatic stellate cell (Ito cell) liver Pericyte: Nucleus pulposus cell: intervertebral disc: Hyaline cartilage chondrocyte: Fibrocartilage chondrocyte: Elastic cartilage ...
Connective tissue has a wide variety of functions that depend on the types of cells and the different classes of fibers involved. Loose and dense irregular connective tissue , formed mainly by fibroblasts and collagen fibers , have an important role in providing a medium for oxygen and nutrients to diffuse from capillaries to cells, and carbon ...
Fibrocytes usually do not leave the connective tissue. Reticular cells are usually larger than fibrocytes. Reticular cells are the fibrocytes of reticular connective tissue and form a network of reticular fibers. Adipocytes are fat cells that are fixed cells in loose connective tissue. Their main function is the storage of lipid.
The connective tissue of the lamina propria is loose and rich in cells. The cells of the lamina propria are variable and can include fibroblasts, lymphocytes, plasma cells, macrophages, eosinophilic leukocytes, and mast cells. [2] It provides support and nutrition to the epithelium, as well as the means to bind to the underlying tissue.
The primary function of the basement membrane is to anchor down the epithelium to its loose connective tissue (the dermis or lamina propria) underneath. This is achieved by cell- matrix adhesions through substrate adhesion molecules (SAMs).
There are two types of neurovascular bundles: superficial bundles and deep bundles. As arteries do not travel within the superficial fascia, the loose connective tissue under the skin, superficial neurovascular bundles differ from deep neurovascular bundles in both composition and function.
The endothoracic fascia is the layer of loose connective tissue deep to the intercostal spaces and ribs, separating these structures from the underlying pleura. This fascial layer is the outermost membrane of the thoracic cavity. The endothoracic fascia contains variable amounts of fat.