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ipn [44]
3 years ago
13

What are 2 factors that prevents joints from rubbing and wearing down your bones

Biology
2 answers:
inessss [21]3 years ago
8 0
A layer of smooth cartilage at their ends, which cushions the bones and prevents them from rubbing directly against one another. The whole joint is also enclosed in a synovial capsule, which is full of synovial fluid. The synovial fluid acts like the oil in an engine, lubricating the joint and preventing the cartilage from becoming worn down.
svetlana [45]3 years ago
7 0
The way joints are made, they naturally should not have trouble with west and tear. The other factor is the cartilage which acts as a kind of shield for the bone and this keeps you from getting arthritis unless you are unhealthy
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Fine focus.

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If you're referencing a microscope, then it would be fine focus. Coarse focus is a basic focus used to properly see a specimen, while fine focus enhance clarity and precision. To use both, you have to gently twist a knob until you can see the specimen at a desired clarity.

Here's a reference image if you need it, it's labeled all the parts of a microscope.

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