Podcast
Questions and Answers
What is the primary role of the immune system?
What is the primary role of the immune system?
Which of the following is NOT a component of the innate immune response?
Which of the following is NOT a component of the innate immune response?
What is a mechanical barrier in the innate immune system?
What is a mechanical barrier in the innate immune system?
Which of the following describes a characteristic of the acquired immune response?
Which of the following describes a characteristic of the acquired immune response?
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What is the role of normal bacterial flora in the immune system?
What is the role of normal bacterial flora in the immune system?
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Study Notes
Immune System Function
- The immune system protects the body from infections caused by bacteria, viruses, fungi, and parasites.
Immune System Divisions
- The immune system is divided into two main branches: the innate (non-specific) immune system and the acquired (adaptive) immune system.
Innate Immune Response
- The innate immune response is the body's first line of defense against pathogens.
- It is non-specific, meaning it acts against all types of microorganisms.
- It includes the following components:
- Mechanical Barriers: Intact skin and mucus membranes prevent pathogen entry.
- Chemical Barriers: Substances like sweat, tears, and stomach acid (HCl) inhibit microbial growth.
- Normal Bacterial Flora: Beneficial bacteria compete with pathogens for resources, space, and receptors, preventing colonization.
- Non-specific Inflammatory Response: Characterized by vasodilation, cell aggregation, leading to symptoms like heat, redness, swelling (edema), and pain.
- Cells of innate immunity: Phagocytic cells engulf and digest invading microorganisms.
Acquired Immune Response
- The acquired immune response is developed through previous exposure to specific pathogens.
- It provides targeted protection against specific microorganisms.
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Description
This quiz focuses on the immune system's function, highlighting its crucial role in protecting the body against infections. It covers the two main branches of the immune system: the innate and acquired immune responses, as well as the components of the innate immunity. Test your knowledge on how these systems work together to defend against various pathogens.
