T Cell and B Cell Functions

The video explains the roles of B cells and T cells in the immune system. Both originate from hematopoietic stem cells in the bone marrow. B cells recognize antigens and produce antibodies, while T cells include helper and cytotoxic types, with functions like binding to antigens and inducing apoptosis. Memory T cells ensure a rapid response to previously encountered antigens. Both cell types are crucial for adaptive immunity, targeting specific pathogens.

What is the origin of both B cells and T cells?

• Thymus

• Lymph nodes

• Hematopoietic stem cells

• Spleen

Where do B cells travel after being produced in the bone marrow?

• Spleen and lymph nodes

• Kidneys

• Liver

• Heart

What is the process called when a B cell engulfs an antigen?

• Exocytosis

• Phagocytosis

• Receptor-mediated endocytosis

• Pinocytosis

What do helper T cells release upon binding to the major histocompatibility complex class 2?

• Hormones

• Lymphokines

• Antibodies

• Cytotoxins

What is the main function of plasma cells derived from B cells?

• To transport oxygen

• To produce antigens

• To release antibodies

• To destroy pathogens

What type of T cell is known for recognizing and destroying infected cells?

• Memory T cells

• Cytotoxic T cells

• Regulatory T cells

• Helper T cells

What is the process called when cytotoxic T cells induce cell death?

• Autophagy

• Apoptosis

• Necrosis

• Phagocytosis

Which molecule on the surface of infected cells presents viral proteins to cytotoxic T cells?

• Major histocompatibility complex class 2

• Major histocompatibility complex class 1

• Antigen receptor

• Lymphokine receptor

What is the role of memory T cells in the immune system?

• To produce antibodies

• To initiate a rapid response upon re-exposure to an antigen

• To transport nutrients

• To regulate blood pressure

What type of immunity do B and T cells contribute to?

• Passive immunity

• Adaptive immunity

• Innate immunity

• Artificial immunity