The Immune System

What is an immune response?

What are the 4 stages of an immune response?

Outline the process of phagocytosis

What is a phagocyte?

What are opsonins?

What is a phagosome?

What do lysosomes contain?

What is a T lymphocyte?

What do the receptors of T lymphocytes bind to?

Complete the sentences:
Each T lymphocyte has a different ____________ on its surface. When the receptor on the surface of a T lymphocyte meets a _______________ antigen, it binds to it - so each T lymphocyte will bind to a different ________. This process _________ the T lymphocyte and is known as _________ ___________. The activated T lymphocyte then undergoes _________ __________ - it divides to produce clones of itself.

Name the 3 types of T lymphocytes

What is the role of T helper cells?

What is the role of T killer cells?

What is the role of T regulatory cells?

TRUE OR FALSE:
Some activated T lymphocytes become memory cells

What are B lymphocytes covered with?

What are antibodies?

Outline clonal selection and clonal expansion of B lymphocytes

What are plasma cells?

Antibodies are secreted by plasma cells. What do these antibodies go on to do?

What is cell signalling?

Complete the sentence:
A cell may release (or _________) a substance that binds to the ___________ on another cell - this causes a ___________ of some kind in the other cell

How is cell signalling used in the immune response?

Stains are often added to blood smear samples. Why?

What are you likely to see when looking at a blood smear?

TRUE OR FALSE
All types of white blood cell have granules in their cytoplasm