Introducao 2

Question 1

What is the main barrier to the success of transplants?

Answer 1

The immune response

The immune response is the main barrier to the success of transplants

Question 2

What happens to individuals with defective immune responses?

Answer 2

They are susceptible to infections

Individuals with defective immune responses are susceptible to infections

Question 3

What is the role of breastfeeding in immunity?

Answer 3

Breastfeeding is part of acquired immunity, specifically passive immunity

Breastfeeding provides temporary protection to the baby against infections and diseases

Question 4

What is the process of antigen presentation to lymphocytes?

Answer 4

1. Antigens captured and exposed to specific lymphocytes
2. Transport to lymphoid organs and presentation to naive T lymphocytes
3. Activation of lymphocytes leads to proliferation and differentiation into effector cells and memory cells
4. Involvement of other non-lymphoid cells in antigen elimination
5. Post-eradication phase

The process involves capturing antigens, activating lymphocytes, proliferation, and differentiation into effector and memory cells

Question 5

What is the role of T lymphocytes in cellular immunity?

Answer 5

T lymphocytes recognize and respond to antigens, assisting in the destruction of microorganisms or infected cells

T lymphocytes have specificity for antigens associated with cell surfaces

Question 6

Where do T lymphocytes mature?

Answer 6

T lymphocytes mature in the thymus

T lymphocytes undergo maturation in the thymus

Question 7

Where do B lymphocytes mature?

Answer 7

B lymphocytes mature in the bone marrow

B lymphocytes undergo maturation in the bone marrow

Question 8

What is the role of memory cells in the immune response?

Answer 8

Memory cells have increased response capacity and faster response than naive lymphocytes

Memory cells accumulate and respond quickly to antigens