15 Questions
Immunity can only be defined as protection from bacterial infections
False
The immune system responds to different infections using the same effector mechanisms
False
Innate immunity is the second line of defense against pathogens
False
Progenitor stem cells can give rise to erythrocytes and megakaryocytes
True
The primary lymphoid organs are where mature lymphocytes originate
False
Adaptive immunity is the first line of defense against pathogens
False
Pathogens are only capable of causing infection, not disease
False
The immune system has no memory of previous infections
False
Innate immunity is highly specific in targeting pathogens
False
The cells of the immune system originate from the liver
False
Pluripotent hematopoietic stem cells can give rise to erythrocytes and megakaryocytes
False
Mast cells are part of the myeloid lineage of progenitor stem cells
True
Innate immunity is the first line of defense against pathogens
True
The primary lymphoid organs are where the cells of the immune system develop into mature forms
False
Adaptive immunity is non-specific and does not have memory
False
Study Notes
- The immune system is responsible for protecting humans from pathogenic microorganisms that cause infection and disease
- Pathogens are microorganisms with the ability to enter hosts, multiply, and stimulate an immune response
- Innate mechanisms (innate immunity) serve as the first line of defense against pathogens, with non-specific responses
- Adaptive mechanisms (adaptive immunity) constitute the second line of defense, providing highly specific and memory-based responses
- The immune system originates from a common progenitor cell in the bone marrow, with progenitor stem cells giving rise to different lineages: erythroid (erythrocytes and megakaryocytes), myeloid (monocyte/macrophage, dendritic cells, PMNs, mast cells), and lymphoid (small and large lymphocytes). The primary lymphoid organs are where these cells originate and develop into immature forms.
Explore the fundamental concepts of clinical immunology with this lecture by Goran N. Saleh. Learn about immunity, the functional importance of the immune system, and how it responds to different types of infections.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
