Microvessel serving to drain and process extracellular fluid
Lymph capillary
Diagram showing the formation of lymph from interstitial fluid (labeled here as "Tissue fluid").
Details
System
Lymphatic system
Identifiers
Latin
vas lymphocapillare
TA98
A12.0.00.044
TA2
3918
TH
H3.09.02.0.05004
FMA
5028
Anatomical terminology
[edit on Wikidata]
Lymph capillaries or lymphatic capillaries are tiny, thin-walled microvessels located in the spaces between cells (except in the central nervous system and non-vascular tissues) which serve to drain and process extracellular fluid. Upon entering the lumen of a lymphatic capillary, the collected fluid is known as lymph. Each lymphatic capillary carries lymph into a lymphatic vessel, which in turn connects to a lymph node, a small bean-shaped gland that filters and monitors the lymphatic fluid for infections.[1] Lymph is ultimately returned to the venous circulation.
Lymphatic capillaries are slightly larger in diameter than blood capillaries, and have closed ends (unlike the loop structure of blood capillaries). Lymph capillaries are strategically placed among the blood-related capillaries in order to have efficient and effective uptake from the interstitial fluid during capillary exchange. This intentional formation allows for a more rapid and continuous collection.[2] Their unique structure permits interstitial fluid to flow into them but not out. The ends of the endothelial cells that make up the wall of a lymphatic capillary overlap. When pressure is greater in the interstitial fluid than in lymph, the cells separate slightly, like the opening of a one-way swinging door, and interstitial fluid enters the lymphatic capillary. When pressure is greater inside the lymphatic capillary, the cells adhere more closely, and lymph cannot escape back into the interstitial fluid. Attached to the lymphatic capillaries are anchoring filaments, which contain elastic fibers. They extend out from the lymphatic capillary, attaching lymphatic endothelial cells to surrounding tissues. When excess interstitial fluid accumulates and causes tissue swelling, the anchoring filaments are pulled, making the openings between cells even larger so that more fluid can flow into the lymphatic capillary.[3]
Lymph capillaries have a greater internal oncotic pressure than blood capillaries, due to the greater concentration of plasma proteins present.
^"Lymphatic System". Cleveland Clinic.
^Leak, LV (June 1976). "The structure of lymphatic capillaries in lymph formation". Federation Proceedings. 35 (8): 1863–71. PMID 1269772.
^Tortora, Gerard J.: "Principles of Human Anatomy - 10th edition", page 512. John Wiley and Sons, Inc., 2005. lymph enters the lymph capillaries by osmosis
Lymphcapillaries or lymphatic capillaries are tiny, thin-walled microvessels located in the spaces between cells (except in the central nervous system...
tissues—enters the lymphcapillaries. This lymphatic fluid is then transported via progressively larger lymphatic vessels through lymph nodes, where substances...
tissues. Lymphcapillaries are slightly bigger than their counterpart capillaries of the vascular system. Lymph vessels that carry lymph to a lymph node are...
as lymph into the lymphatic capillaries and lymphatic vessels. These vessels carry the lymph throughout the body, passing through numerous lymph nodes...
the extracellular fluid collects into small vessels (lymphcapillaries) it is considered to be lymph, and the vessels that carry it back to the blood are...
A vascular malformation is a blood vessel or lymph vessel abnormality. Vascular malformations are one of the classifications of vascular anomalies, the...
and uterus. In the walls of blood vessels, and lymph vessels, (excluding blood and lymphcapillaries) it is known as vascular smooth muscle. There is...
no central pump. Instead, lymph circulates through peristalsis in the lymphcapillaries as well as valves in the capillaries, compression during contraction...
lymphatic vessels, lymph nodes, organs, tissues and circulating lymph. This subsystem is an open system. A major function is to carry the lymph, draining and...
capillary. Fluid filtered to the space outside a capillary is mostly returned to the circulation via lymph nodes and the thoracic duct. A mechanism for this...
system related products around the body. The lymph fluid has been found to move through a lymphcapillary of the skin at approximately 0.0000097 m/s. The...
bronchi have plexuses of lymphcapillaries in their mucosa and submucosa. The smaller bronchi have a single layer of lymphcapillaries, and they are absent...
digestion. Villus capillaries collect amino acids and simple sugars taken up by the villi into the blood stream. Villus lacteals (lymphcapillaries) collect absorbed...
unit of a lymph vessel that lies between two semilunar (half moon-shaped) valves. Lymph vessels are channels larger than the lymphcapillaries that have...
structures of the lymphatic system, including lymph nodes, lymph ducts, lymphatic tissues, lymphcapillaries and lymph vessels. Lymphangiography is the same procedure...
The lymphcapillaries function to aid in the uptake of fluids, macromolecules, and cells. Although they are generally similar to blood capillaries, the...
plasma (or any other body fluid such as blood and lymph) that causes a pull on fluid back into the capillary. Participating colloids displace water molecules...
obstruction from, for example, pressure from a cancer or enlarged lymph nodes, destruction of lymph vessels by radiotherapy, or infiltration of the lymphatics...
and small. Smaller veins are called venules, and the smallest the post-capillary venules are microscopic that make up the veins of the microcirculation...
the lymph system.” This may be referenced either way above, but the technique is the same. This is an anesthesia technique recommended for lymph-sparing...
allows blood to return from the capillary beds to drain into the venous system via increasingly larger veins. Post-capillary venules are the smallest of the...
vessels. The endothelium forms an interface between circulating blood or lymph in the lumen and the rest of the vessel wall. Endothelial cells form the...
returning to the venous system excess fluid from tissues as well as the lymph nodes that filter this fluid for signs of pathogens. These malformations...
poisoning" is synonymous with sepsis. Lymphatic vessels are smaller than capillaries and tiny venules and are ubiquitous in the body. These vessels are fitted...
usually squamous cell carcinoma) or compressing from the outside (tumor, lymph node, tubercle). Another cause is poor surfactant spreading during inspiration...
nearby lymph nodes are struck early. The lungs, liver, brain, and bones are the most common metastasis locations from solid tumors. In lymph node metastasis...
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