Chapter Questions on Complements and Antibodies

These flashcards cover key concepts from the lecture on complement pathways and the process of phagocytosis, helping to prepare for the upcoming exam.

What are the three complement activation pathways that converge at the cleavage of complement component C3?

Classic pathway, alternative pathway, lectin pathway.

What is the activation sequence of the classic complement pathway?

C1 → C4 → C2 → C3 → C5 → C6 → C7 → C8 → C9.

Which complement component is present in the greatest quantity in plasma?

C3.

What are the three stages of the Classic Complement Pathway in their correct sequence?

Recognition, Enzymatic Activation or Amplification, Membrane Attack.

What is the component of the membrane attack complex?

C8.

At what stage does the complement system reach its full amplitude?

C3.

What are the steps of phagocytosis in the correct order?

1. Chemotaxis 2. Adherence, 3. Engulfment, 4. Lysosome Formation 5. Fusion 6. Death and Digestion

According to the book, what are the steps of phagocytosis?

1. Change in direction of movement due to a chemoattractant substance 2. Increase in chemoattractants at the site of tissue damage 3. Ingestion of bacteria 4. Digestion of bacteria

Mast Cells are associated with what?

Participation in IgE hypersensitivity reactions.

All of the following are a function of T cells except:

Synthesis of antibody

The function of T cells is:

Cellular immune response

The function of B cells is:

Humoral response

The function of Natural Killer Cells is:

Cytotoxic reaction

The surface membrane marker for CD4 is:

Helper-inducer T Cells

The surface membrane marker for CD8 is:

Suppressor-cytotoxic T cells

The surface membrane marker for CD3 is:

All or most T Lymphocytes

The appropriate function of T lymphocytes is:

Cellular immune response

The appropriate function of B lymphocytes is:

Humoral immune response