Question

What is the function of lymphocytes and monocytes

Answer 1

Lymphocyte.

Lymphocytes are more common in the lymph system. The blood has three types of lymphocytes:

* B cells: B cells make antibodies that bind to pathogens and then destroy it. (B cells not only produce antibodies that can bind to pathogens, but after the attack, some B cells will retain the ability to produce antibodies as a service system 'memory'.

* T cells: CD4 + (helper) T cells coordinate the response to resistance (which survive in HIV infection) sarta important to hold the intracellular bacteria. CD8 + (cytotoxic) can kill virus-infected cells.

* Natural killer cells: natural killer cells (natural killer, NK) cells can kill the body that does not show a signal that he should not be killed because it has been infected with a virus or have become cancerous.

6. Monocytes.

Monocytes divide function "vacuum cleaner" (phagocytosis) of neutrophils, but he lived with further additional duty: to give pieces of pathogens to T cells so that the pathogen can be memorized and be killed, or it can make antibody responses to maintain.

Answer 2

Lymphocytes constitute 25-38% of the total white blood cells (WBCs). They are the most important cells in the immune function and the dominant cells of the lymphatic system. Lymphocytes are constantly on the move throughout the body, but at differing rates. The fastest are the T-cells . Since they must have close contact with their targets, they move rather quickly, spending maybe 30 minutes in the blood, 5 or 6 hours in the spleen, and 15-20 hours in a lymph node.


Monocytes are produced from monoblasts . They make up 3-8% of the total WBCs and are nearly twice the size of a typical erythrocyte. The nucleus is large and usually has a kidney-shape. Even though they are fewer than lymphocytes in number, monocytes are more efficient phagocytes.
Monocytes deposit themselves in various organs, producing macrophages which surround foreign particles to destroy them (phagocytosis). Macrophages are larger than microphages and can either be wanderers (free macrophages) or immobile (fixed macrophages).