3º First Term

Which of these can be pathogens?

• Bacteria

• Protozoa

• Viruses

• Fungi

Viruses are alive.

• True

• False

Which line of defence is specific?

• First

• Second

• Third

Which of these events happens LAST?

• The inflammatory response is activated.

• The pathogen survives, so T and B cells get involved.

• The pathogen enters the body through the respiratory system.

• The pathogen isn't stopped by the mucuous membranes.

Which of these are examples of the first line of defence?

• Tears

• Blood

• Mucous membranes

• Bacterial flora

Which type of cell is involved in the inflammatory response?

• Helper T cell

• Cytotoxic T cell

• Mast cell

• B cell

What substance do mast cells produce?

• Perforin

• Antibodies

• Antigens

• Histamine

What verb starting with D describes what macrophages do?

A lymphocyte is a red blood cell.

• True

• False

Which cells are involved in the humoral immune response?

• Helper T cells

• Cytotoxic T cells

• B cells

• Mast cells