Cartilage is a type of connective tissue in the body. It is made of cells called chondrocytes embedded in a matrix, strengthened with fibers of collagen and sometimes elastin, depending on the type of cartilage. There are three different types: hyaline cartilage, elastic cartilage, and fibrocartilage. Cartilage serves to provide structure and support to the body's other tissues without being as hard or rigid as bone. It can also provide a cushioning effect in joints.
Cartilage is avascular, meaning that it is not supplied by blood vessels; instead, nutrients diffuse through the matrix. Cartilage is usually flexible, again depending on the type. Some of the bodily structures that include cartilage are the ears, nose, ribcage, and intervertebral discs.
Hyaline cartilage makes up the majority of the body's cartilage. It lines the bones in joints, helping them to articulate smoothly. Hyaline cartilage contains mostly type II collagen fibers.
Elastic cartilage is more flexible than the other types of cartilage because of the elastin fibers it contains. This type of cartilage is found in the outer ear, the larynx, and the Eustachian tubes, for example. It provides the perfect balance of structure and flexibility and helps keep tubular structures open.
Fibrocartilage is the strongest and most rigid type of cartilage. It contains more collagen than hyaline cartilage, including more type I collagen, which is tougher than type II. Fibrocartilage makes up the intervertebral discs, connects tendons and ligaments to bones, and appears in other high-stress areas. Damaged hyaline cartilage is often replaced with fibrocartilage, which unfortunately does not bear weight as well due to its rigidity.
There are a few disorders associated with cartilage. Chondrodystrophies are a group of disorders in which the cartilage is ossified, or transformed into bone. Arthritis is characterized by the degradation of cartilage in the joints, leading to limited movement and pain. Achondroplasia is a cartilage disorder resulting in dwarfism. Benign tumors called chondroma can also arise in the cartilage.
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anon244604
Post 23 |
The hyaline cartilage has pericondium and other types don't. Of what importance is this pericondium and why is it only found on hyaline cartilage? |
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anon160470
Post 22 |
What is cartilage's main importance? |
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anon117139
Post 20 |
what is the name of the cell type that makes cartilage? |
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anon101413
Post 19 |
is cartilage soft and can it be squeezed like in your nose and make your nose smaller? |
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anon49987
Post 14 |
What are the major causes of cartilage injuries? |
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anon47442
Post 12 |
where does the name come from? |
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anon43567
Post 11 |
how does cartilage get nourishment? |
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anon43452
Post 10 |
My head has a two-inch lump on it. Is this dangerous? |
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anon38989
Post 9 |
what can be done for torn cartilage? |
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anon36645
Post 8 |
Can you do a cartilage transplant?
Or can the collagen that is found in the different types of cartilage be found naturally anywhere else? Would there be any hope for replacing, I think Hyaline cartilage from one part of the body to the other, like putting it in the knees, so people could run more. |
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bena
Post 7 |
What does Cartilage form? |
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anon24955
Post 4 |
what does cartilage look like?
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anon21314
Post 3 |
My third rib on the left hand side has decided to grow more cartilage so there is now a lump under my skin, why would this happen? |
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bigmetal
Post 1 |
can the body grow more cartilage, or repair damaged cartilage? |