PATHOLOGY MCQ
LYMPHO RETICULAR SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
As the body ages the T & B cells become less responsive to ____
|
|
Antigens
|
|
|
Self tolerance
|
|
|
Antibodies
|
|
|
I mmunity
|
Explanation:
Detailed explanation-1: -B cell structure and function During T cell-dependent activation, B cells absorb the antigen and then present pieces of the antigen on their surface via a major histocompatibility complex (MHC). Helper T cells can then recognize those antigens via the MHC and activate the B cells.
Detailed explanation-2: -The effects of aging on the immune system are manifest at multiple levels that include reduced production of B and T cells in bone marrow and thymus and diminished function of mature lymphocytes in secondary lymphoid tissues. As a result, elderly individuals do not respond to immune challenge as robustly as the young.
There is 1 question to complete.