Answer:
B cells produce plasma cells, which secrete antibodies into the blood.
Explanation:
Lymphocytes are white cells found in the lymph tissues and blood that constitute the parts of the body's main immune system.
These cells which are made through mitotic division process in the bone marrow are of two types namely:
The B cells function by producing antibodies while the T cells function by killing cancer cells and destroying cells that are compromised within the body.
Hence the correct statement about lymphocytes is that B cells produce plasma cells, which secrete antibodies into the blood.
Answer:
B cells produce plasma cells, which secrete antibodies into the blood.
Explanation:
Lymphocytes are type of white blood cells which function in immune response. They have large nucleus occupying which occupies the entire cells. Two lymphocytes cells exist, both produced in the bone marrow of the fetus before birth.
→the B-lymphocytes(B- cells ), delayed till maturity and moves into the blood stream to be localized in the lymph nodles and Spleen.
→the T-lymphocytes (T-cells), which is released from the bone marrow to the blood stream for storage in Thymus. This is an organ found between the the two lungs beneath the chest bone/sternum.
Generally,. As each B-cells matures the gene that codes for a specific antibodies also changes repeatedly, thus large number of small similar cells are produced,( by mitossis as the B-cells divides) with ability to produce the same type of antibodies.This smaller identical cells are called clones. The antibodies at this stage lack the B-cells, but contain layers of receptors as they are attached to the surface membrane.The receptors are are compatible for specific antigens, for the mature B-cells to attack.
→Exposure of these small B-cells to new antigens makes the B-cell specific to the antigen to divide repeatedly(clonal selection). Larger smaller cells further divided in a process called clonal expansion, so that large number of clones are produced. These numerous activated B-cells are converted to plasma cells, and they secrets antibodies rapidly into the blood to attack the antigens.
→The plasma cells move in the blood streams to the spleen and lung lining, and die after short time. The antibodies produced continue to fight the antigens after a period of time, with the number reducing with time.
→However, to ensure rapid response of the B-cells to similar future attacks, some B-cells formed memory cells.which move and remain in the blood stream for long period of time,
