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Gastrointestinal physiology is the branch of human physiology that addresses the physical function of the gastrointestinal (GI) tract. The function of the GI tract is to process ingested food by mechanical and chemical means, extract nutrients and excrete waste products. The GI tract is composed of the alimentary canal, that runs from the mouth ...
Physical water scarcity, heatwaves, disease (most commonly from diseases that cause vomiting and/or diarrhea), exercise. Treatment. Drinking clean water. Medication. Saline. In physiology, dehydration is a lack of total body water, [3] with an accompanying disruption of metabolic processes.
The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has three ...
a variety of causes; most commonly due to buildup of gas in the stomach, small intestine, or colon. Abdominal distension occurs when substances, such as air (gas) or fluid, accumulate in the abdomen causing its expansion. [1] It is typically a symptom of an underlying disease or dysfunction in the body, rather than an illness in its own right.
Kwashiorkor is a type of severe acute malnutrition (SAM). SAM is a category, composed of two conditions: marasmus and kwashiorkor. [9] Both kwashiorkor and marasmus fall under the umbrella of protein–energy malnutrition (PEM). [10] These diseases are oftentimes discussed together, but are distinctly separate conditions of malnutrition.
The extracellular fluid compartment is further subdivided into the interstitial fluid and the intravascular fluid compartments. Body fluids, bodily fluids, or biofluids, sometimes body liquids, are liquids within the body of an organism. [1] In lean healthy adult men, the total body water is about 60% (60–67%) of the total body weight; it is ...
The gut has intrinsic peristaltic activity (basal electrical rhythm) due to its self-contained enteric nervous system. The rate can be modulated by the rest of the autonomic nervous system. [23] The coordinated contractions of these layers is called peristalsis and propels the food through the tract. Food in the GI tract is called a bolus (ball ...
Digestion is the breakdown of large insoluble food compounds into small water-soluble components so that they can be absorbed into the blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream. Digestion is a form of catabolism that is often divided into two processes based on ...