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wrote...
Posts: 2105
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4 years ago
Briefly describe what is happening when a person “cracks their knuckles”.
Textbook 

Anatomy and Physiology: From Science to Life


Edition: 2nd
Authors:
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wrote...
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Posts: 9880
4 years ago
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   When the synovial cavity expands, the pressure of the synovial fluid decreases, creating a partial vacuum. The suction draws carbon dioxide and oxygen out of the blood vessels in the synovial membrane, forming bubbles in the fluid. When the bubbles are forced to burst, as when the fingers are hyperflexed, the cracking or popping sound is heard.
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wrote...
4 years ago
Yes, this is correct.
wrote...
4 years ago
The questions you posted are actually easy to answer. They just require a bit of patience looking them up in your textbook.

Glad to have helped
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