Submandibular glands were collected blood from the bottom half of the face. If the bloodstream becomes infected lymph node, then the normal immunity, it is destroyed by immune cells in the lymph nodes. So the immune system
The immune system - how it works?
It protects the body from infection.
Submandibular lymph nodes - where they are located and how to look
Submandibular lymph nodes - is accumulation of lymphatic tissue located along the lymph vessels near the large blood vessels of the submandibular region. 6-8 submandibular lymph nodes are located in the triangle in front of the submandibular salivary gland and its thicker in front and rear of the facial vein. Profit lymphatic vessels originate from the skin of the upper and lower lip, chin, cheeks, nose, inside of the lower eyelid, nasal mucosa, gums, palate; as well as the teeth, tongue sublingual salivary gland, mandibular lymph nodes.
Submandibular lymph nodes are soft pinkish-gray bean-shaped formation, arranged in groups and covered with a connective tissue capsule. The gate node - a pit on the surface of the capsule, through the gate in a lymph node consists of arteries and nerves and veins are located and efferent lymphatic vessels. Each lymph node runs two to four lymph vessel and bringing out one or two efferent larger diameter than bring.
Inside the lymph node parenchyma is - loose connective tissue filled with immune cells - mainly lymphocytes and macrophages. Here there are antibodies to infectious agents.
What are the functions of the submandibular lymph nodes
The main functions of the submandibular lymph nodes are protective and barrier-filtration.
If you get an infection in the face area, where depart bringing lymphatic vessels (for example, gingivitis, periodontitis, rhinitis, an inflammation of the submandibular gland) with a current of infectious agents enter the lymph submandibular lymph nodes where immune cells are destroyed. The drainage system of lymph node retained all incoming particles requiring destruction (bacterial cells and tumors, foreign particles) - are destroyed by macrophages.
Lymph nodes also serves as a depot of lymph and participate in the redistribution of fluid and blood cells between the blood and lymph.
Changes in the submandibular lymph nodes
Submandibular lymph nodes may increase - the so-called reactive lymphadenitis
Lymphadenitis - when inflamed lymph nodes
- Inflammatory response
- An increase in lymph node is due to proliferation of lymphatic tissue - lymph node preparing to destroy the infection, which is brought from the flow of lymph from the tissues subordinate node. Reactive lymphadenitis of submandibular nodes often occurs against the backdrop of the submandibular salivary gland inflammation.
If the lymph node
Lymph nodes - what keeps our immune system
not doing its job and the infection goes unchecked it develops acute lymphadenitis of submandibular glands. This submandibular lymph nodes increase in size and become dense, painful, and the skin over them swells and reddens. Can develop and purulent inflammation and then necrosis (tissue death), submandibular lymph nodes, but this is rare.
If inflammation of the surrounding tissue is chronic and acute lymphadenitis was not treated or treated incompletely, then develop chronic submandibular lymphadenitis.
When cancer processes in the mouth or nose into the submandibular lymph nodes also grows first connective tissue (tumor cells are destroyed), and then there is the accumulation of tumor cells in the lymph nodes and the development therein cancer process.
With significant violations of human immunity develop infectious-inflammatory processes in the mouth and nose, and the lymph nodes are not enlarged and reduced in size (atrophy), the lymphoid tissue lymph node is usually replaced with fatty tissue.
Submandibular lymph nodes often can be felt only when they increase.
They grow at a high load and delay the destruction of infectious agents and tumor cells. They palpated as dense a greater or lesser extent of disease entities of different sizes. In acute significant infectious-inflammatory processes (eg abscesses submandibular region) enlarged submandibular lymph nodes can merge together and form a painful conglomerates.
You should always remember that if enlarged submandibular lymph nodes, you should look for an infectious-inflammatory process in the upper respiratory tract, periodontal tissues and submandibular salivary glands. Less painful (and painless) will submandibular lymph nodes in the formation of tumors in the surrounding tissues.