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Related Concept Videos

Neural Regulation01:37

Neural Regulation

Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
Gut-Brain Axis01:22

Gut-Brain Axis

The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such as...
Enteric Nervous System: Regulation of GI Motor Activity01:11

Enteric Nervous System: Regulation of GI Motor Activity

The Enteric Nervous System (ENS) plays a pivotal role in regulating gastrointestinal or GI motor activity. This complex network of nerves, deeply embedded within the gut wall, responds to changes in the gut environment and receives input from both the autonomic nervous system and the central nervous system. By doing so, the ENS operates various programs tailored to the body's nutritional status and needs.
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Physiology of Enteric Nervous System and Gut Health01:05

Physiology of Enteric Nervous System and Gut Health

The gastrointestinal tract, responsible for the digestion and absorption of nutrients, is safeguarded by the intestinal barrier, which consists of secretory, physical, and immune components. At the forefront is the secretory barrier, composed of essential elements such as mucus, gut microbiota, and defense proteins. They collaborate to break down food particles, facilitate nutrient absorption, and maintain optimal gut health. These secretory components ensure the smooth functioning of the...
Sensory Functions of the Skin01:16

Sensory Functions of the Skin

The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
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Regulation of the Digestive System01:25

Regulation of the Digestive System

Digestive activity regulation hinges on three primary components. Activation is prompted by a multitude of mechanical and chemical indicators, primarily detected by receptors within the stomach and intestines' walls. These receptors predominantly respond to factors such as mechanical stretching of the organ walls, changes in pH and osmolarity, and the presence of digesting materials and their by-products.
The effectors in this regulation system are glands and smooth muscles. Activation of these...

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Related Experiment Video

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Studying Murine Small Bowel Mechanosensing of Luminal Particulates
10:21

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Published on: March 18, 2022

Gut sensing mechanisms.

Arushi deFonseka1, Jonathan Kaunitz

  • 1West Los Angeles VA Medical Center, Building 114, Suite 217, Los Angeles, CA 90073, USA.

Current Gastroenterology Reports
|November 12, 2009
PubMed
Summary
This summary is machine-generated.

The gut uses complex pathways to sense nutrients, controlling digestion, food intake, and satiety. This review updates knowledge on gastric nutrient sensing and protective mechanisms.

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Area of Science:

  • Gastroenterology
  • Nutritional Science
  • Physiology

Background:

  • Gut nutrient sensing involves complex pathways regulating digestion and absorption.
  • These pathways also influence gastric motility, food intake, and satiety.
  • Protective mechanisms activate to prevent injury and limit toxic substance absorption.

Purpose of the Study:

  • To provide an update on current knowledge of gastric nutrient sensing.
  • To highlight recent findings and future research directions in the field.

Main Methods:

  • Literature review of recent research on gastric nutrient sensing.
  • Synthesis of current understanding of nutrient-mediated pathways.

Main Results:

  • Detailed overview of nutrient sensing mechanisms in the stomach.
  • Discussion of pathways regulating digestion, absorption, motility, intake, and satiety.
  • Exploration of protective responses to luminal nutrients.

Conclusions:

  • Gastric nutrient sensing is a complex process vital for homeostasis.
  • Recent advances have elucidated key molecular and cellular players.
  • Further research is needed to fully understand and target these pathways.