40 Questions
Which type of immune defense is effective from the time of birth and does not require recognition of specific identities?
Innate immunity
Which white blood cell type is responsible for defending against parasites and allergic reactions?
Basophils
What is the main function of interferons in the immune system?
Interfering with viral replication
Which component of the immune system is involved in enhancing the activity of antibodies and phagocytic cells?
Complement system
Which type of white blood cell plays a significant role in the adaptive immune response and antibody production?
Lymphocytes
Which of the following statements about neutrophils is NOT true?
Their numbers decrease during infections
What is the primary function of eosinophils?
Defend against parasitic worms by secreting toxic molecules
Which of the following statements about basophils is correct?
They contribute to allergic reactions by secreting histamine
What is the primary function of monocytes?
Migrate to tissues and become macrophages
Which of the following is NOT a type of lymphocyte?
Neutrophils
Which type of white blood cell is primarily responsible for the release of histamine during anaphylactic shock?
Basophils
Which component of the immune system is responsible for the lysis (breaking down) of foreign cells or pathogens?
Complement system
Which type of white blood cell is primarily responsible for the phagocytosis (engulfing and digesting) of foreign particles or pathogens?
Neutrophils
Which type of white blood cell is primarily responsible for the production of antibodies?
Lymphocytes
Which component of the immune system is responsible for the production of proteins that interfere with viral replication?
Interferons
Which type of white blood cell is primarily responsible for phagocytosis and the destruction of bacteria and other pathogens?
Neutrophils
Which type of white blood cell is primarily involved in the body's defense against parasitic infections and allergic reactions?
Eosinophils
What is the primary function of the complement system in the immune response?
Opsonization and lysis of pathogens
Which type of white blood cell is responsible for the production of interferons, cytokines that interfere with viral replication?
Lymphocytes
What is the primary function of monocytes in the immune system?
Antigen presentation to T cells
Which of the following is true about macrophages?
They are derived from monocytes and act as guards patrolling the body for foreign invaders.
What is the primary function of the complement system?
To lyse foreign cells, especially bacteria, through the formation of a Membrane Attack Complex (MAC).
Which of the following is true about Natural Killer (NK) cells?
They are a class of lymphocytes that target virus-infected cells and cancer cells in a non-antigen-specific manner.
Which of the following is an example of a plasma protein that participates in the complement system cascades?
C3
What are the four signs of inflammation?
Redness, swelling, warmth, and pain
What is the main function of lymphatic vessels compared to blood vessels?
Transport fluids away from the tissues
Which lymphatic vessel drains lymph from the left halves of our upper body, lower limbs, abdomen, and left upper limb?
Thoracic duct
In the lymphatic system, where do the primary lymphoid organs supply the mature lymphocytes?
To the secondary lymphoid organs
Which fluid closely resembles interstitial fluid and is low in protein when compared to plasma?
Lymph
What is responsible for exerting a pumplike action in the wall of lymphatic vessels?
Smooth muscle
What is the color of lymph and how does it compare to plasma?
Yellow, lower in protein
Which type of white blood cells are mainly found in lymph and make up the cellular components of lymph?
Monocytes
Which lymphatic vessel drains lymph from the right halves of our upper body parts and the right upper limb?
Right lymphatic duct
What are the two very important roles of lymphoid organs in the human body?
House and provide a proliferation site for lymphocytes, Give a surveillance site to examine and clean the lymph fluid
What do the components of lymph mainly consist of?
White blood cells
Which of the following statements about neutrophils is correct?
Their numbers increase during infections due to their phagocytic nature.
What is the primary function of eosinophils in the immune system?
Defense against parasitic worms and allergic reactions.
Which statement about basophils is incorrect?
They are responsible for defending against parasitic worms.
Which type of white blood cell migrates to tissues and becomes macrophages?
Monocytes
Which of the following statements about lymphocytes is correct?
They include B cells, T cells, and natural killer (NK) cells.
Test your knowledge on interferons and white blood cell functions. Questions cover topics like interferon secretion, antiviral protein synthesis, and the functions of neutrophils and eosinophils.
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