Prab: CSV import

2025-02-25T21:02:19Z

CSV import

← Older revision		Revision as of 21:02, 25 February 2025
Line 38:		Line 38:
	[[Category:Lymphatic system]]		[[Category:Lymphatic system]]
	[[Category:Immune system]]		[[Category:Immune system]]
			== Lymph node ==
			<gallery>
			File:Lymphknoten_(Schwein).jpg\|Lymphknoten (Schwein)
			File:Dark,_light,_mantle_and_marginal_zones_of_a_secondary_follicle.png\|Dark, light, mantle and marginal zones of a secondary follicle
			File:Lymphatic_immune_system_lymph_node5-CROPPED.jpg\|Lymphatic immune system lymph node
			File:Illu_lymph_node_structure.png\|Illustration of lymph node structure
			File:Gray598.png\|Gray's Anatomy illustration of lymph node
			File:Diagram_of_a_lymph_node_CRUK_022.svg\|Diagram of a lymph node
			File:Swollen_Lymph_Nodes.jpg\|Swollen Lymph Nodes
			File:Crc_met_to_node1.jpg\|CRC metastasis to node
			</gallery>

Prab: CSV import

2025-02-18T22:24:04Z

CSV import

← Older revision		Revision as of 22:24, 18 February 2025
Line 1:		Line 1:
	~~#REDIRECT~~[[lymph nodes]]		{{Short description\|Small, bean-shaped organs of the lymphatic system}}

			A '''lymph node''' is a small, bean-shaped structure that is part of the body's [[lymphatic system]]. Lymph nodes are distributed widely throughout the body and are linked by [[lymphatic vessels]]. They are major sites of [[B cell]] and [[T cell]] lymphocytes, and other white blood cells. Lymph nodes act as filters for foreign particles and cancer cells.

			==Structure==
			Lymph nodes are small, soft, round or oval structures that are usually not palpable. They are located along the lymphatic vessels and are most densely clustered in the neck, armpits, and groin. Each lymph node is surrounded by a fibrous capsule, which extends inside the node to form trabeculae. The internal structure of a lymph node is divided into the outer cortex and the inner medulla.

			===Cortex===
			The cortex is the outer part of the lymph node and contains follicles, which are collections of lymphocytes. The follicles can be primary or secondary, with secondary follicles having a germinal center where B cells proliferate and differentiate.

			===Medulla===
			The medulla is the inner part of the lymph node and contains medullary cords, which are extensions of the cortex. The medullary cords contain lymphocytes, plasma cells, and macrophages. The medullary sinuses are spaces that allow lymph to flow through the node.

			==Function==
			Lymph nodes play a crucial role in the body's immune response. They filter lymph, trapping bacteria, viruses, and other foreign substances, which are then destroyed by specialized white blood cells called lymphocytes. Lymph nodes also produce lymphocytes, which are essential for the immune response.

			===Immune Response===
			When an antigen is detected in the lymph, it is presented to lymphocytes in the lymph node. This triggers an immune response, leading to the activation and proliferation of lymphocytes. Activated B cells can differentiate into plasma cells that produce antibodies, while T cells can directly attack infected cells.

			==Clinical Significance==
			Lymph nodes can become swollen due to infections, inflammation, or cancer. Swollen lymph nodes, or lymphadenopathy, can be a sign of various conditions, ranging from minor infections to serious diseases like [[lymphoma]] or [[metastatic cancer]].

			===Lymphadenopathy===
			Lymphadenopathy refers to the enlargement of lymph nodes. It can be localized, affecting nodes in a specific area, or generalized, affecting nodes throughout the body. Causes of lymphadenopathy include infections, autoimmune diseases, and malignancies.

			===Lymphoma===
			Lymphoma is a type of cancer that originates in the lymphatic system, particularly in the lymph nodes. It is classified into Hodgkin lymphoma and non-Hodgkin lymphoma, each with distinct characteristics and treatment approaches.

			==Related pages==
			* [[Lymphatic system]]
			* [[Immune system]]
			* [[Lymphocyte]]
			* [[Lymphoma]]
			* [[Lymphadenopathy]]

			{{Lymphatic system}}

			[[Category:Lymphatic system]]
			[[Category:Immune system]]

Prab: Redirected page to Lymph nodes

2019-03-19T13:04:05Z

Redirected page to Lymph nodes

New page

#REDIRECT[[lymph nodes]]

Lymph node - Revision history

Prab: CSV import

Prab: CSV import

Prab: Redirected page to Lymph nodes