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Lymph nodes are important for the proper functioning of the immune system, acting as filters for foreign particles including cancer cells, but have no detoxification function. In the lymphatic system, a lymph node is a secondary lymphoid organ. A lymph node is enclosed in a fibrous capsule and is made up of an outer cortex and an inner medulla.
The two lobes differ slightly in size, with the left lobe usually higher than the right. Thymic tissue may be found scattered on or around the gland, and occasionally within the thyroid. [2] The thymus in children stretches variably upwards, at times to as high as the thyroid gland. [2]
One of the main functions of the lymphatic system is to provide an accessory return route to the blood for the surplus three litres. [6] The other main function is that of immune defense. Lymph is very similar to blood plasma, in that it contains waste products and cellular debris, together with bacteria and proteins.
Gley's glands, Sandstroem's glands, parathyroid gland: in the neck parathyroid hormone: 29 Parietal cell: stomach: hydrochloric acid, intrinsic factor: dynamic canaliculi 30 Parotid gland: mouth: saliva tubulo-alveolar 31 Peyer's patches (or glands) ileum, lymphatic glands Pineal gland: brain: melatonin: 32 Prostate: surrounds the urethra just ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 4 March 2025. List of organ systems in the human body Part of a series of lists about Human anatomy General Features Regions Variations Movements Systems Structures Arteries Bones Eponymous Foramina Glands endocrine exocrine Lymphatic vessels Nerves Organs Systems Veins Muscles Abductors Adductors ...
The mucosa-associated lymphoid tissue (MALT), also called mucosa-associated lymphatic tissue, is a diffuse system of small concentrations of lymphoid tissue found in various submucosal membrane sites of the body, such as the gastrointestinal tract, nasopharynx, thyroid, breast, lung, salivary glands, eye, and skin.
inferior – inferior of the saphenous opening of the leg, receive drainage from lower legs; superolateral – on the side of the saphenous opening, receive drainage from the side buttocks and the lower abdominal wall. superomedial – located at the middle of the saphenous opening, take drainage from the perineum and genitals. [2]
The immune system is involved in many aspects of physiological regulation in the body. The immune system interacts intimately with other systems, such as the endocrine [83] [84] and the nervous [85] [86] [87] systems. The immune system also plays a crucial role in embryogenesis (development of the embryo), as well as in tissue repair and ...