REVIEW CHECKLIST CH 29 - The Immune System

Front

What is Herd Immunity?

Back

A condition where a large portion of a community becomes immune to a disease, making its spread unlikely.

Front

What are the systole and diastole phases of the cardiac cycle?

Back

Systole is the contraction phase and diastole is the relaxation phase; they correspond to the higher and lower numbers in blood pressure readings, respectively.

Front

Where is blood pressure highest in the circulatory system?

Back

In the arteries, because they receive blood directly from the heart.

Front

Which cell secretes histamine?

Back

Mast cell.

Front

What type of white blood cells are B and T cells?

Back

Lymphocytes.

Front

What is the function of mast cells in the immune system?

Back

Mast cells release histamine and play a key role in allergic reactions.

Front

What is the role of neutrophils in the immune response?

Back

Neutrophils are the first responders to sites of infection and are crucial for phagocytosis.

Front

What is the difference between active and passive immunity?

Back

Active immunity is developed through exposure to pathogens, while passive immunity is acquired through antibodies from another source.

Front

What is the significance of the blood-brain barrier?

Back

The blood-brain barrier protects the brain from harmful substances while allowing essential nutrients to pass.

Front

What are antibodies?

Back

Antibodies are proteins produced by B cells that specifically target and neutralize pathogens.