Understanding the Immune System

What is the primary role of the immune system?

• To attack all cells in the body

• To fight bacteria and viruses

• To produce insulin

• To create muscle fibers

How do B cells generate their unique receptors?

• Through a fixed genetic code

• By copying T cell receptors

• By environmental factors

• By random DNA shuffling

What happens to B cells that bind to self-proteins in the bone marrow?

• They become T cells

• They are killed

• They produce insulin

• They are activated

Where do T cells mature and undergo a similar selection process as B cells?

• In the liver

• In the bone marrow

• In the lymph nodes

• In the thymus

What is required for a B cell that escaped the bone marrow to become active?

• Direct exposure to bacteria

• A high concentration of insulin

• Presence of hemoglobin

• A T cell that recognizes the same antigen

What is the result when the immune system attacks the body's own cells?

• Enhanced antibody production

• Autoimmune disease

• Increased muscle strength

• Improved immune response

What is Myasthenia Gravis?

• A type of bacteria

• A viral infection

• A muscle strengthening condition

• An autoimmune disease affecting muscles

How does Myasthenia Gravis affect muscle function?

• By destroying muscle fibers

• By enhancing nerve signals

• By increasing muscle mass

• By blocking receptors on muscles

What is the role of the receptor on muscle fibers?

• To create new muscle cells

• To generate insulin

• To receive signals from neurons

• To produce antibodies

What does the term 'asthenia' in Myasthenia Gravis mean?

• Weakness

• Pain

• Growth

• Strength