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Abdomen

Definition

noun

(1) The region of the body in between the thorax and the pelvis

(2) The part of the body where stomach, intestines, liver, spleen, and pancreas are contained inside a cavity lined by peritoneum

(3) (invertebrate biology) The posterior segment of invertebrates, after the thoracic segment


Supplement

In vertebrates, such as humans, the abdomen contains visceral organs such as those of the digestive and urinary systems.

In humans, it is comprised of nine regions divided by two vertical and two horizontal lines :

In invertebrates, the abdomen generally pertains to the segment of their body after the thorax. It usually contains the digestive and reproductive structures.


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... all the eggs. But now I'm seriously worrying. Starting this morning, I feel a little tingling/buzzing/vibrating in the lower right part of my abdomen. Do you think those things have laid eggs in my internal organs? After two weeks of inactivitiy is it possible they're coming to life? I'm petrified ...

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by rmorrison
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Evolution of fireflies

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by thoffnagle
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