Understanding B Cells and Humoral Immunity

The video explains how plasma cells synthesize antibodies at a rapid rate, which are specific to antigens infecting the body. These antibodies travel through blood and plasma to target and destroy microbes, even those the B cells have not encountered directly. This process is part of humoral immunity, where antibodies in plasma confer protection against infections.

What is the primary function of plasma cells?

• To produce antigens

• To synthesize antibodies

• To create white blood cells

• To destroy red blood cells

How do antibodies produced by B cells reach the site of infection?

• By traveling through the nervous system

• Through blood and plasma

• By direct contact with infected cells

• By being ingested by other cells

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

• To create antigens

• To produce large numbers of antibodies

• To destroy red blood cells

• To directly attack infected cells

How do antibodies contribute to the destruction of microbes?

• By directly attacking the microbes

• By traveling through blood and plasma to target microbes

• By creating new antigens

• By destroying red blood cells

Why are B lymphocytes crucial for humoral immunity?

• They can travel through the nervous system

• They create antigens

• They produce antibodies that can travel through body fluids

• They directly attack infected cells

What does the term 'humoral' refer to in the context of immunity?

• Nervous system

• Blood cells

• Body fluids

• Bone marrow