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Related Concept Videos

Functions of the Lymphatic and Immune System01:28

Functions of the Lymphatic and Immune System

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The lymphatic system plays a crucial role in bolstering our immune system. It consists of a network of lymphoid organs, lymph, and lymphatic vessels that provide structural and functional support in safeguarding the body against pathogens such as viruses and bacteria.
The primary lymphoid organs, including the bone marrow and the thymus, serve as the maturation sites for lymphocytes. Secondary lymphoid organs, like the mucosa-associated lymphoid tissue, activate these lymphocytes and serve as...
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Anatomy of the Intestines01:23

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Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
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Digestive Functions of the Large Intestine01:20

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The large intestine is where the final stages of digestion happen. When the cecum receives chyme, it contains undigested carbohydrates that undergo fermentation. Gut bacteria ferment these carbohydrates to produce short-chain fatty acids that provide some energy and help synthesize essential vitamins.
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Development of the Lymphatic System01:15

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The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...
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What is Metabolism?00:52

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Overview
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Introduction to Lymphatic and Immune System01:22

Introduction to Lymphatic and Immune System

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Immunity is a crucial biological concept about our body's inherent capacity to prevent infections and diseases. A complex network of cells and tissues collectively known as the immune system facilitates this natural defense mechanism. The immune system plays an integral role in maintaining our health and well-being, shielding us from potential health threats.
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Updated: Jan 31, 2026

The Mesenteric Lymph Duct Cannulated Rat Model: Application to the Assessment of Intestinal Lymphatic Drug Transport
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The Intestinal Lymphatic System: Functions and Metabolic Implications.

Vincenza Cifarelli1, Anne Eichmann2

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Cellular and Molecular Gastroenterology and Hepatology
|December 18, 2018
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The gut lymphatic system, vital for lipid transport and fluid balance, is increasingly studied. Advances reveal its role in metabolic syndrome, highlighting potential therapeutic targets.

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Area of Science:

  • Gastroenterology
  • Lymphatic Biology
  • Physiology

Background:

  • The intestinal lymphatic system is crucial for homeostasis, lipid absorption, and immune function.
  • Historically understudied, recent advances have improved understanding of its physiology.
  • Emerging evidence links intestinal lymphatics to metabolic syndrome.

Purpose of the Study:

  • To review current knowledge on the molecular control of intestinal lymphatic vessel structure and function.
  • To discuss the regulation of chylomicron entry into lymphatic vessels.
  • To highlight the role of intestinal lymphatics in metabolic syndrome.

Main Methods:

  • Review of current literature on molecular mediators of lymphatic endothelial cells (LECs) growth.
  • Analysis of genetic approaches and intravital imaging techniques.
  • Discussion of signaling pathways regulating intestinal lymphatic physiology.

Main Results:

  • Vascular endothelial growth factors (VEGFs), hormones, and transcription factors regulate lymphatic vessel function.
  • Specific signaling pathways are involved in chylomicron transport.
  • Intestinal lymphatics play a role in the etiology of metabolic syndrome.

Conclusions:

  • Intestinal lymphatic biology is a rapidly advancing field with significant metabolic implications.
  • Understanding these mechanisms offers potential therapeutic targets for metabolic syndrome.
  • Further research is needed to fully elucidate the role of intestinal lymphatics.