Which of the following is not a role of the spleen?
Serve as a site of T cell maturation.
The spleen serves as an immune system surveillance organ; it also stores platelets and breaks down erythrocytes. There are plenty of T cells in the white pulp of the spleen, but the T cells do not mature there; the exclusive role of the thymus is to foster T cell maturation.
Choose the true statement about the thymus.
After puberty, the thymus begins to decrease in size.
The main role of the tonsils is to:
gather and remove pathogens entering through the pharynx.
Which of the following is not a part of the mucosa-associated lymphatic tissue (MALT)?
Except for the _____ and the spleen, the lymphoid organs are poorly developed at birth.
Only the tonsils and the spleen are well developed by birth. Shortly after birth the other lymphoid tissues and organs become populated by lymphocytes, and their development parallels the maturation of the immune system.