Microbiology Practice Exam

Helper T cells...

1. Function solely in humoral immunity

2. Are mainly found in the bloodstream

3. Function in both humoral and cell-mediated immune function activation

4. Are associated with the production of antibodies

The correct answer is: Function in both humoral and cell-mediated immune function activation

Helper T cells play a crucial role in the immune system by acting as regulators of both humoral and cell-mediated immune responses. They do not function solely in one aspect of immunity but are involved in coordinating the overall immune response. These cells assist B cells in the production of antibodies, which is part of the humoral immune response, by providing necessary signals and cytokines that promote B cell activation, proliferation, and differentiation into plasma cells that produce antibodies. Additionally, Helper T cells are also vital for the activation of cytotoxic T cells and other components involved in cell-mediated immunity, which targets and eliminates infected or cancerous cells. This dual functionality underscores their importance and versatility within the adaptive immune system, highlighting that they are not confined to a single type of immune response.