The lymphatic system of the human body is the powerhouse of the immune system. Just like blood has it's own 'freeway' around the body via the heart (away from the heart in arteries, and to the heart in veins), so too does the immune system.
When blood flows round the tissues of the body it is under pressure. This pressure will allow fluid to 'leak' out of the blood vessels and into the tissues. This fluid is then 'sucked' into lymphatic vessels that travel around the body.
Instead of carrying blood cells loaded with oxygen or carbon dioxide, the lymph contains the cells of the immune system. These include T and B lymphocytes and macrophages. Some cells are trained to recognise specific alien invaders (like bacteria) and other are primed to produce large quantities of antibodies in response to an infection (these are called B-memory cells).
Lymph 'drains' to pea-sized nodules called lymph nodes all around the body which will swell during infection as they make massive quantities of weapons to fight the invaders. This is why you might feel your tonsils as swollen and tender during an episode of tonsilitis.
Lymph is also important in the understanding of how cancer spreads from one point of the body to another - a process known as metastasis. Sometimes, if a tumour grows for long enough it 'eats into' the tissues around it (known as local invasion). At this point, some of the cancer cells can get into the lymph and travel to a distant point in the body, stop, and grow as a secondary tumour. This is why we like to catch cancer early so it can be treated before the process of metastasis occurs. Some cancers, such as that of the bone marrow (myeloma) or of the immune cells (leukaemia) are harder to treat because the cells the cancer affects are already mobile around the body.
Lymph Vessels return intercellular fluid to the veins.
The fluid is called lymphatic fluid. It is msotly water with electrolytes and white blood cells.
Lymph
Extracellular
Lymph
a watery fluid that acts as a servant to the cells of the body and blood.
Fluids and particles absorbed into lymph capillaries are called lymph.
Interstitial fluid
Fluid and particles absorbed into lymph capillaries
lymph capillary Lymph fluid is filtered in lymph nodes. Lymph nodes are along lymph vessels which that run along blood vessels. Lymph vessels draw in interstitial fluid (fluid between cells) and it them becomes lymph fluid. Lymph nodules are in connective tissue in place of high traffic and does not function as a filter because it's not along a lymph vessel.
when lymph fluid is contained inside lymph vessels or lymph node(lymphatic system) it is called lymph whereas when it is squeezed out of cells b/w the cell membranes it is called tissue fluid
Lymph
Lymph is a clear fluid
Lymph Vessels return intercellular fluid to the veins.
Lymph
The lymph capillary in the right arm channels excess fluid from plasma. This fluid flows in the direction of the lymph nodes in the axilla through larger lymphatic vessels where the fluid becomes lymph.
The orgin on lymph is this: the cardiovascular system pumps blood through its system but it cannot return all the fluid from the body cells. The lymph system picks up 60%of the fluid dropped off at the cellular level, at this point we are talking about interstial fluid, the IF picks up plasma and becomes tissue fluid. The tissue fluid is then picked up my lymph capillaries, the tissue fluid is now called lymph.