Dictionary » A » Abdomen




(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


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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Hyperadrenergic POTS

... specifically an abnormal decrease in the volume of blood plasma. This sometimes occurs in POTS patients. It may occur due to blood pooling in the abdomen and legs . POTS is most frequently seen in young women, often less than 35 years of age. Hyperadrenergic POTS is defined as POTS associated ...

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by rmorrison
Wed Mar 19, 2014 5:38 pm
Forum: Human Biology
Topic: Hyperadrenergic POTS
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Evolution of fireflies

... needed to get there. I'm not an entomologist but I suspect that this began as simply the males flashing a brightly-colored part of their body (abdomen?). There are advantages for insects to be active at night, since there are fewer predators, so an individual that could show his bright abdomen ...

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by thoffnagle
Thu Jun 06, 2013 9:44 pm
Forum: Evolution
Topic: Evolution of fireflies
Replies: 4
Views: 2528

Help please! case study about Excretory System

... BP 150/90 mmHg HEENT : pale conjunctivae, neck vein engorged Heart : regular rhythm, normal heart sound. Lungs : fine crepitation at both lungs. Abdomen : ascites was positive. Extremities : pitting edema of both legs Investigation Blood examination 1. CBC: Hct 20%, Hb 7% 2. BUN 100 mg/dl, Cr ...

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by kochibaza
Mon Jan 21, 2013 3:04 pm
Forum: Human Biology
Topic: Help please! case study about Excretory System
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Life Without Gallstones

... surgery, there is only one option which is gallbladder surgery that removes the gallbladder and gallstones through several small cuts in the abdomen. One of the side effects of gallbladder removal can be the dumping of bile which is now not as easily regulated and can send someone running ...

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by gavind
Sun Dec 23, 2012 2:14 pm
Forum: Physiology
Topic: Life Without Gallstones
Replies: 0
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Re: Stomach bloating and weight gain

... 9 months pregnant!!! The doctors tested me for parasites.... NEGATIVE..... Tested me for Celiac Disease.... NEGATIVE.... performed Ultra sound of Abdomen..... NEGATIVE..... did colonoscopy.... NEGATIVE!.... Tested for Lactose Intolerance.... NEGATIVE! I had had Lyme Disease 1 year prior and had ...

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by rabidwolves
Mon Mar 05, 2012 6:43 pm
Forum: Physiology
Topic: Stomach bloating and weight gain
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