Why don't your knees squeak? Type B synoviocytes make a slippery liquid that keeps your joints gliding smoothly.
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Type B synoviocytes live in the thin lining inside your joints, right next to type A synoviocytes. They are long, stretched-out cells, a bit like the fiber-making cells in your skin.
They face the inside of the joint, where the bones meet.
The liquid in your joints is thick and slippery, a bit like raw egg white. A thin coat of it is enough to keep your bones gliding.
Type B synoviocytes make special slippery ingredients and pour them into the joint. One of them is called hyaluronic acid. It makes the joint liquid thick and gooey.
This liquid coats the smooth cartilage on the ends of your bones. It helps them glide past each other without rubbing, so you can bend and twist all day.
Rub your dry hands together, then try it with a drop of soapy water. Slippery liquid makes things slide much more easily, just like in your joints!
By Smile and Learn - English. A fun video for kids.
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