Internal Organs · Body soundBowel sounds
Gurgling sounds are produced by moving intestinal contents and gas.
Frequency: CommonInternal Organs
Internal Organs · Body sound
Internal Organs · Body soundFlatulence
Intestinal gas is released through the anus.
Frequency: Common
Internal Organs · ReflexGastrocolic reflex
A meal can trigger the urge to have a bowel movement shortly afterward.
Frequency: Common
Internal Organs · PerceptionAsparagus urine odor
After eating asparagus, urine can have a noticeable smell.
Frequency: Varies by individual
Internal Organs · Involuntary responseBeetroot in urine
Beetroot can color urine pink to red.
Frequency: Varies by individual
Internal Organs · Anatomical variationLactase persistence
In some adults, the enzyme that breaks down milk sugar remains active.
Frequency: Varies by individual
Internal Organs · Involuntary responseLactose intolerance
Undigested lactose can cause gas and diarrhea.
Frequency: Varies by individual
Internal Organs · ReflexThe stomach makes room
The upper stomach relaxes during a meal and receives food.
Frequency: Common
Internal Organs · Involuntary responseGallbladder contraction after a meal
Fatty food triggers emptying of the gallbladder. This usually goes unnoticed.
Frequency: Common
Internal Organs · Involuntary responseMigrating motor complex
Between meals, the stomach and small intestine pass through recurring phases of movement.
Frequency: Common
Internal Organs · ReflexRectoanal inhibitory reflex
When the rectum fills, the internal sphincter briefly relaxes as a reflex.
Frequency: Common
Internal Organs · Involuntary responseCoffee-induced bowel movement
Coffee can increase the urge to have a bowel movement in some people.
Frequency: Varies by individual
Internal Organs · Involuntary responsePost-micturition dribble
A few drops may emerge from the urethra after using the toilet.
Frequency: Varies by individualSurprisingly quiet here.
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