Immune properties of blood. Lymph formation and its functions. Immunity. Humoral and cellular immunity

What is the primary function of leukocytes in the blood?

• Transport oxygen

• Protect against infections

• Carry nutrients

• Regulate blood pressure

Which component of the blood is responsible for immune responses?

• Red blood cells

• Plasma

• White blood cells

• Platelets

Lymph is formed from which of the following?

• Red blood cells

• Interstitial fluid

• Plasma proteins

• Digestive enzymes

What is one of the main functions of lymph nodes?

• Oxygen transportation

• Production of red blood cells

• Filtering harmful substances

• Hormone secretion

What is the primary difference between humoral and cellular immunity?

• Humoral immunity targets viruses; cellular immunity targets bacteria.

• Humoral immunity uses antibodies; cellular immunity uses T-cells.

• Cellular immunity relies on plasma; humoral immunity relies on lymph.

• Both are the same process.

Which cells are responsible for humoral immunity?

• T-cells

• B-cells

• Platelets

• Macrophages

What type of cells play a central role in cellular immunity?

• Red blood cells

• T-cells

• Neutrophils

• Plasma cells

How does lymph assist in immunity?

• It produces hemoglobin.

• It transports nutrients to tissues.

• It carries lymphocytes to fight infections.

• It filters oxygen into the blood.

Which of the following is an example of innate immunity?

• Production of antibodies after vaccination

• Skin acting as a barrier to pathogens

• T-cell activation

• Memory B-cells responding to a virus

What is the role of memory cells in immunity?

• Immediate destruction of pathogens

• Storing oxygen for T-cells

• Remembering previous infections for faster response

• Producing plasma proteins