5 Levels Of Defence Flashcards
What is the first level of defense the body uses?
Physical barriers such as skin and mucous membranes.
True or False: The body’s first line of defense is primarily chemical.
False.
Fill in the blank: The second level of defense involves __________ responses.
inflammatory.
What type of cells are primarily involved in the inflammatory response?
White blood cells.
What is the third level of defense in the immune system?
Adaptive immune response.
Multiple Choice: Which cells are responsible for the adaptive immune response? A) Erythrocytes B) Leukocytes C) Thrombocytes
B) Leukocytes.
What is the role of antibodies in the immune system?
To neutralize pathogens and mark them for destruction.
True or False: The innate immune response is specific to particular pathogens.
False.
What does the term ‘pathogen’ refer to?
Any organism that can cause disease.
Fill in the blank: The fourth level of defense is known as __________ immunity.
acquired.
What is the primary function of T cells in the immune response?
To destroy infected host cells.
Multiple Choice: Which of the following is NOT a component of the immune system? A) Lymph nodes B) Spleen C) Pancreas
C) Pancreas.
What is the fifth level of defense in the body?
Memory immune response.
True or False: Memory cells are produced during the primary immune response.
True.
Fill in the blank: The primary purpose of memory cells is to provide __________ against future infections.
immunity.
What is the difference between active and passive immunity?
Active immunity is developed through exposure to pathogens, while passive immunity is acquired from another source.
Multiple Choice: Which type of immunity is provided by vaccinations? A) Active B) Passive
A) Active.
What role do macrophages play in the immune system?
They engulf and digest pathogens and debris.
True or False: The skin acts as a barrier to all pathogens.
False.
Fill in the blank: __________ is a protein that helps to destroy infected cells.
Interferon.
What triggers the inflammatory response?
Tissue injury or infection.
Multiple Choice: Which type of immunity is immediate but short-lived? A) Innate B) Adaptive
A) Innate.
What is the role of B cells in the immune response?
To produce antibodies.
True or False: Natural killer cells are part of the adaptive immune system.
False.
Fill in the blank: The immune system can remember past infections through __________ cells.
memory.
What is the significance of the ‘immune memory’?
It allows for a faster and more effective response to previously encountered pathogens.
