The navel (clinically known as the umbilicus; pl.: umbilici or umbilicuses; also known as the belly button or tummy button) is a protruding, flat, or hollowed area on the abdomen at the attachment site of the umbilical cord. == Structure == The umbilicus is used to visually separate the abdomen into quadrants.
The navel (clinically known as the umbilicus; pl.: umbilici or umbilicuses; also known as the belly button or tummy button) is a protruding, flat, or hollowed area on the abdomen at the attachment site of the umbilical cord. == Structure == The umbilicus is used to visually separate the abdomen into quadrants.
Source: Wikipedia "Navel" · CC BY-SA 4.0
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