Fibrocartilage

Cells

Similar to other types of cartilage, fibrocartilageA tough, shock-absorbing cartilage found in intervertebral discs and menisci. contains chondrocytes.  However, the chondrocytes in fibrocartilage are often arranged in rows or clusters and are interspersed among the collagenA structural protein in the dermis that provides strength and elasticity. fibers.  Because of the nature of how fibrocartilage absorbs stain, the cytoplasmThe gel-like substance within a cell that contains organelles and cytosol. of chondrocytes is usually removed during tissue fixing. As a result, they do not appear similar to chondrocytes in other cartilages stained with the same stain.

Fibers

Fibrocartilage contains collagen fibers to absorb shock. These collagen fibers are arranged in a parallel or wavy pattern, giving fibrocartilage its characteristic appearance under the microscope.  Fibrocartilage offers a unique opportunity for histologists to create a beautiful visual rendering.  Often the collagen fibers are stained using different stains and creating a pink, orange, and blue rainbow of colors. In order to stain the collagen with these colors, the cytoplasm of the chondrocytes is usually removed before staining.

Matrix

The matrix of fibrocartilage contains a combination of collagen fibers, proteoglycans, glycosaminoglycans (GAGs), and waterThe universal solvent essential for life.. 

Functions

Fibrocartilage acts as a shock absorber, cushioning and distributing forces that are applied to the joints and other weight-bearing structures. For example, in the spineProminent ridge on the posterior scapula dividing it into supraspinous and infraspinous fossae., fibrocartilage helps to support the vertebral column and absorb shock during movementA fundamental property of life involving motion of the body or its parts..  The knee also contains little pads of fibrocartilage called menisci (singular meniscus).  These are little shock absorbing pads that take a hit in aerobics and skiing. The pubic symphysisCartilaginous joint connecting the two pubic bones at the midline. contains a pad of fibrocartilage holding together your two hip bones.

Locations

Fibrocartilage is found in regions of the body where strong support and shock absorption are needed. It is commonly found in structures such as the intervertebral discs. The ligamentum flavum is a large ligament. It basically holds the components of the spine (bones and discs) in place.  The pubic symphysis is the joint between the pubic bones.  The pubic symphysis is stretched during birth to allow passage of the baby through the hips.  Because fibrocartilage is neither innervated or vascularizedTo invade a tissue with blood capillaries., it cannot repair itself easily. This lack of repair can cause life-long issues with the pelvic floor when the fibrocartilage of the pubic symphysis is damaged during birth.  Kegels, people. Do your Kegels.  

Easily Confused With

Dense Regular CT, Smooth Muscle

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General Information
Adipose CT
Areolar CT
Reticular CT
Dense Regular CT
Dense Irregular CT
Elastic CT
Bone CT
Hyaline Cartilage CT
Elastic Cartilage CT
Fibrocartilage CT