Related Experiment Video

Updated: Aug 12, 2026

Assessing the Viability of a Synthetic Bacterial Consortium on the In Vitro Gut Host-microbe Interface
10:24

Assessing the Viability of a Synthetic Bacterial Consortium on the In Vitro Gut Host-microbe Interface

Published on: July 4, 2018

Gastric acidity: an important factor regulating the composition of the bacterial flora in the small intestine

R Pollák, T Várkonyi, E Nagy

    Acta Medica Hungarica
    |January 1, 1986
    PubMed

    More Related Videos

    An In Vitro Batch-culture Model to Estimate the Effects of Interventional Regimens on Human Fecal Microbiota07:15

    An In Vitro Batch-culture Model to Estimate the Effects of Interventional Regimens on Human Fecal Microbiota

    Published on: July 31, 2019

    Effects of Desmodium caudatum on Gastrointestinal Hormones and Intestinal Flora in Rats with Gastritis03:48

    Effects of Desmodium caudatum on Gastrointestinal Hormones and Intestinal Flora in Rats with Gastritis

    Published on: March 1, 2024

    Related Concept Videos

    Stomach pH Regulation01:21

    Stomach pH Regulation

    The human body carefully regulates the internal pH of different organs to maintain homeostasis. For example, while the blood plasma maintains a neutral pH of 7, the stomach lumen has an acidic pH of 1.5 - 3.5. The low pH of stomach lumen helps kill pathogens in the food and break down complex food molecules.
    The acid-secreting gastric mucosal epithelial cells (parietal cells) lining the stomach lumen maintain the low pH in the lumen. Numerous ion transporters and channels on these parietal...
    Pathophysiology of Peptic Ulcer Disease: Injurious Factors01:22

    Pathophysiology of Peptic Ulcer Disease: Injurious Factors

    Peptic ulcers are sores on the stomach's inner lining and the upper small intestine, which are the result of disruptions in the mucosal layer that houses parietal cells which produce gastric acid, and chief cells which secrete pepsinogen.
    In the antrum region, G cells secrete the gastrin hormone that binds to gastrin-cholecystokinin-B (CCK2) receptors on parietal and enterochromaffin-like (ECL) cells in the fundic glands. Simultaneously, the vagus nerve releases acetylcholine, which binds to M3...
    Mucosal Barrier of the Stomach01:25

    Mucosal Barrier of the Stomach

    The gastric glands contain parietal cells that secrete hydrochloric acid (HCl) for digestion. The cells secrete HCl because it is highly corrosive and essential for breaking down food. To achieve this, they secrete hydrogen and chloride ions into the lumen of the gastric glands, which combine to form HCl.
    Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
    Bacterial Flora of the Large Intestine01:29

    Bacterial Flora of the Large Intestine

    The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
    The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
    Microbiota of the Stomach and Small Intestine01:27

    Microbiota of the Stomach and Small Intestine

    The human gastrointestinal (GI) tract is characterized by distinct physicochemical conditions that shape its microbial communities. Among these, the stomach presents a particularly challenging environment for microbial colonization due to its highly acidic pH, ranging from 1 to 3. This extreme acidity effectively limits microbial density. However, certain acid-tolerant microorganisms are capable of surviving in this niche. Notably, Helicobacter pylori can colonize the gastric mucosa,...
    Functions of the Gut Microbiota01:18

    Functions of the Gut Microbiota

    The gut microbiota includes trillions of microorganisms that colonize the human gastrointestinal tract, including bacteria, archaea, viruses, and fungi. This complex ecosystem plays a critical role in maintaining intestinal and systemic health. Most of these microbes inhabit the large intestine, establishing a relatively stable and diverse community that contributes to gut homeostasis through various metabolic, immunological, and protective mechanisms.Dominant bacterial phyla, such as...