Q1. Define immunodeficiency.

Background

Topic: Immune System Disorders

This question tests your understanding of what it means for the immune system to be deficient and how this impacts the body's ability to fight infections and diseases.

Key Terms:

• Immunodeficiency: A state in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent.

Step-by-Step Guidance

1. Think about the normal function of the immune system: to protect the body from pathogens and abnormal cells.

2. Consider what happens if the immune system is not functioning properly—what are the consequences?

3. Formulate a definition that describes a condition where the immune system is less effective than normal.

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Q2. What is a primary (congenital) immunodeficiency?

Background

Topic: Types of Immunodeficiencies

This question focuses on the difference between immunodeficiencies that are present from birth versus those acquired later in life.

Key Terms:

• Primary (congenital) immunodeficiency: An immunodeficiency that is present at birth, usually due to genetic factors.

Step-by-Step Guidance

1. Recall the meaning of "congenital"—a condition present from birth.

2. Think about how genetic mutations or inherited traits can affect the immune system's development or function.

3. Frame your answer to specify that this type of immunodeficiency is not acquired later in life, but is inherent from birth.

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Q3. What is a secondary (acquired) immunodeficiency?

Background

Topic: Types of Immunodeficiencies

This question asks you to distinguish between immunodeficiencies that are inherited and those that develop after birth due to external factors.

Key Terms:

• Secondary (acquired) immunodeficiency: An immunodeficiency that develops after birth due to external factors such as infections, medications, or other diseases.

Step-by-Step Guidance

1. Consider what "acquired" means in a medical context—it refers to conditions that develop after birth.

2. Think about possible causes that could weaken the immune system after a person is born (e.g., infections, drugs, malnutrition).

3. Summarize your answer to reflect that this type of immunodeficiency is not inherited, but results from external influences.

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Q4. Besides aging, what is the leading cause of secondary immunodeficiencies?

Background

Topic: Causes of Immunodeficiency

This question tests your knowledge of the most common causes of acquired immunodeficiencies, aside from the natural decline in immune function with age.

Key Terms:

• Secondary immunodeficiency: Acquired immune deficiency due to external factors.

Step-by-Step Guidance

1. Recall that aging naturally weakens the immune system, but the question asks for another major cause.

2. Think about diseases or conditions that can significantly suppress immune function (e.g., infections, especially viral infections).

3. Identify the most prominent disease or condition (other than aging) that leads to secondary immunodeficiency.

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Q5. List four viruses that can potentially cause secondary immunodeficiencies.

Background

Topic: Viral Causes of Immunodeficiency

This question asks you to recall specific viruses known to impair immune function, leading to secondary immunodeficiencies.

Key Terms:

• Secondary immunodeficiency: Immune deficiency caused by external factors, including viral infections.

Step-by-Step Guidance

1. Think about viruses that are known to target immune cells or otherwise suppress immune function.

2. Recall examples from your textbook or class notes—HIV is a classic example, but there are others.

3. List at least four viruses that can cause this effect.

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Q6. What is Kaposi sarcoma? Late-stage infection with which virus makes patients more susceptible to this disease?

Background

Topic: Virus-Associated Cancers

This question tests your understanding of a specific cancer associated with immunodeficiency and the viral infection that increases susceptibility to it.

Key Terms:

• Kaposi sarcoma: A type of cancer that forms in the lining of blood and lymph vessels, often seen in immunocompromised patients.

• Susceptibility: Increased risk of developing a disease due to weakened immune defenses.

Step-by-Step Guidance

1. Recall what type of disease Kaposi sarcoma is and which body systems it affects.

2. Think about which virus, when present in late-stage infection, is most commonly associated with the development of Kaposi sarcoma.

3. Connect the dots between immunodeficiency, viral infection, and increased cancer risk.

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Q7. What is the difference between prophylactic vs therapeutic immunotherapies?

Background

Topic: Immunotherapy

This question asks you to distinguish between two approaches to using immunotherapy: one to prevent disease and one to treat it.

Key Terms:

• Prophylactic: Intended to prevent disease.

• Therapeutic: Intended to treat or cure an existing disease.

Step-by-Step Guidance

1. Define what "prophylactic" means in a medical context.

2. Define what "therapeutic" means in a medical context.

3. Compare and contrast the goals of each type of immunotherapy.

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Q8. Define autoimmune disorder.

Background

Topic: Autoimmunity

This question tests your understanding of what happens when the immune system attacks the body's own tissues.

Key Terms:

• Autoimmune disorder: A condition in which the immune system mistakenly attacks the body's own cells and tissues.

Step-by-Step Guidance

1. Recall the normal function of the immune system: to distinguish self from non-self.

2. Think about what happens when this self-tolerance fails.

3. Formulate a definition that includes the concept of the immune system attacking the body's own tissues.

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Q9. What failure of the immune system leads to autoimmune disorders?

Background

Topic: Self-Tolerance and Autoimmunity

This question focuses on the concept of immune self-tolerance and what happens when it breaks down.

Key Terms:

• Self-tolerance: The immune system's ability to avoid attacking the body's own tissues.

Step-by-Step Guidance

1. Recall the mechanisms by which the immune system distinguishes self from non-self.

2. Think about what could go wrong in these mechanisms to cause the immune system to attack self-tissues.

3. Summarize the specific failure that leads to autoimmune disorders.

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Q10. Name the infectious agent that may be associated with the following diseases:

• A) Type I diabetes

• B) Guillain–Barré syndrome

• C) Rheumatic heart disease

• D) Multiple sclerosis (MS)

Background

Topic: Infectious Agents and Autoimmune Diseases

This question asks you to connect certain autoimmune diseases with infectious agents that may be associated with their development, based on textbook tables.

Key Terms:

• Infectious agent: A microorganism (such as a virus or bacterium) that can cause disease.

Step-by-Step Guidance

1. Refer to Table 13.2 in your textbook for possible associations between infectious agents and autoimmune diseases.

2. For each disease listed, identify the suspected infectious agent from the table.

3. Write down the agent associated with each disease, noting that these associations are not always confirmed.

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Q11. True or False. If the statement is “False”, correct it. Autoimmune diseases are usually straightforward in their diagnosis, often needing only one test to identify the disorder.

Background

Topic: Diagnosis of Autoimmune Diseases

This question tests your understanding of the complexity involved in diagnosing autoimmune diseases.

Key Terms:

• Diagnosis: The process of identifying a disease based on symptoms, tests, and other evidence.

Step-by-Step Guidance

1. Consider whether autoimmune diseases typically present with clear, unique symptoms.

2. Think about the diagnostic process—does it usually involve a single test or multiple tests and clinical evaluations?

3. Decide if the statement is true or false, and if false, provide a corrected statement.

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