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Development of the Lymphatic System

Development of the Lymphatic System

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...

Lymphatic Vessels and Lymph Transport

Lymphatic Vessels and Lymph Transport

Lymphatic vessels, known as lymphatics, are crucial in transporting lymph from peripheral tissues to our venous system. This process begins with lymph entering through tiny capillaries that branch through tissues. These capillaries have unique features such as larger diameters, thinner walls, and a distinctive one-way valve system formed by overlapping endothelial cells.
This one-way system allows fluids, solutes, and even pathogens to enter but prevents their return to the intercellular spaces.

Overview of the Vascular System

Overview of the Vascular System

The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...

Functions of the Lymphatic and Immune System

Functions of the Lymphatic and Immune System

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...

Introduction to Lymphatic and Immune System

Introduction to Lymphatic and Immune System

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.
The immune responses can be categorized into two types: innate and adaptive. Innate immunity comprises nonspecific defenses we are born...

Detailed Structure and Function of Lymph Nodes

Detailed Structure and Function of Lymph Nodes

Lymph nodes are bean-shaped structures that cluster along the lymphatic vessels in the inguinal, axillary, and cervical regions. Each node is divided into compartments by a capsule that extends trabeculae inward.
From a histological perspective, lymph nodes can be split into two main areas: the superficial cortex and the deep medulla. The outer cortex is populated by dendritic cells, macrophages, and B lymphocytes, which are densely packed into follicles. When these B-lymphocytes are presented...

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Related Experiment Video

Updated: May 13, 2026

Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting

Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting

Published on: May 1, 2015

[Lymphatic vascular system, development and lymph formation. Review].

J-F Bernaudin¹, M Kambouchner, R Lacave

¹Histologie Biologie Tumorale, ER2 UPMC, Hôpital Tenon, 4, rue de la Chine, 75020 Paris, France. jean-francois.bernaudin@tnn.aphp.fr

Revue De Pneumologie Clinique

|March 12, 2013

Summary

This summary is machine-generated.

The lymphatic vascular system drains interstitial fluid via specialized vessels. Bone marrow cells may serve as precursors for lymphatic endothelial cells, a novel finding in vascular biology.

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Three-Dimensional Imaging of the Vertebral Lymphatic Vasculature and Drainage using iDISCO+ and Light Sheet Fluorescence Microscopy

Three-Dimensional Imaging of the Vertebral Lymphatic Vasculature and Drainage using iDISCO⁺ and Light Sheet Fluorescence Microscopy

Published on: May 22, 2020

Related Experiment Videos

Last Updated: May 13, 2026

Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting

Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting

Published on: May 1, 2015

Three-Dimensional Imaging of the Vertebral Lymphatic Vasculature and Drainage using iDISCO+ and Light Sheet Fluorescence Microscopy

Three-Dimensional Imaging of the Vertebral Lymphatic Vasculature and Drainage using iDISCO⁺ and Light Sheet Fluorescence Microscopy

Published on: May 22, 2020

Area of Science:

Vascular Biology
Developmental Biology
Cell Biology

Context:

* The lymphatic vascular system is a complex network responsible for draining interstitial fluid.
* Lymphatic vessels are essential for maintaining tissue fluid homeostasis and immune surveillance.
* Their development and function are critical from embryogenesis through adulthood.

Purpose:

* To provide a comprehensive overview of the lymphatic vascular system's structure and function.
* To highlight key molecular players and developmental processes involved in lymphatic formation.
* To discuss the role of lymphatic vessels in disease states like cancer and inflammation.

Summary:

* Lymphatic vessels, composed of specialized endothelial cells, collect interstitial fluid via prelymphatic channels, capillaries, precollectors, and collectors.
* Anchoring filaments, valves, and intrinsic muscle contractions (lymphangions) facilitate unidirectional lymph flow.
* Key markers include podoplanin, LYVE-1, and VEGFR3, while Prox1, Sox18, COUP-TFII, VEGFC, VEGFD, and FoxC2 are vital for development.
* Neolymphangiogenesis is induced by cancer and inflammation, with bone marrow cells emerging as potential lymphatic endothelial cell precursors.

Impact:

* Understanding lymphatic vascular biology is crucial for addressing fluid imbalances and inflammatory conditions.
* Insights into lymphatic development and neolymphangiogenesis can inform cancer therapy and regenerative medicine.
* This knowledge supports research into lymphatic dysfunction and related diseases.