Everything about Areolar Connective Tissue totally explained
Areolar connective tissue (or
loose connective tissue) is the most widely distributed
connective tissue type in vertebrates.
Location
It can be found in the
skin as well as in places that connect
epithelium to other tissues. It is also found in the orbit.
The areolar tissue is found beneath the
dermis layer and is also underneath the
epithelial tissue of all the
body systems that have external openings.
It is also a component of
mucus membranes found in the
digestive,
respiratory,
reproductive, and
urinary systems.
It also surrounds the
blood vessels and
nerves.
Composition
It is a pliable, mesh-like
tissue with a fluid matrix and functions to cushion and protect body
organs.
Cells called
fibroblasts are widely dispersed in this tissue; they're irregular branching cells that secrete strong fibrous
proteins and
proteoglycans as an extracellular matrix.
The cells of this type of tissue are generally separated by quite some distance by a gel-like gelatinous substance primarily made up of collagenous and elastic fibers.
Function
Areolar connective tissue holds
organs in place and attaches
epithelial tissue to other underlying tissues. It also serves as a reservoir of water and salts for surrounding tissues. Almost all cells obtain their nutrients from and release their wastes into areolar connective tissue.
Classification
Loose connective tissue is named based on the "weave" and type of its constituent fibers. There are three main types:
- Collagenous fibers: collagenous fibers are made of collagen and consist of bundles of fibrils that are coils of collagen molecules.
- Elastic fibers: elastic fibers are made of elastin and are "stretchable."
- Reticular fibers: reticular fibers consist of one or more types of very thin collagen fibers. They join connective tissues to other tissues.
Additional images
Image:Gray1033.png|Section of the human esophagus. Moderately magnified.
It has lots of spindles that help the bones get bone marrow
Further Information
Get more info on 'Areolar Connective Tissue'.
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