T lymphocytes and cell mediated responses Flashcards
What is the body’s initial response to infection?
What does it mean for infection types?
The body’s initial response to infection is non - specific, meaning it responds the same way to all types of infections, regardless of the pathogen
What is the primary immune response? (2 pts)
The primary immune response is specific and grants immunity through a targeted reaction to a specific pathogen
What is immunity?
Immunity is the ability of an organism to resist infection by protecting against disease - causing microorganisms or their toxins
How does immunity work in the body?
Immunity involves recognising and responding to foreign material (antigens) that enter the body, such as pathogens or their toxins
What role do antigens play in immunity?
Antigens are foreign molecules (often on the surface of pathogens) that trigger an immune response, leading to the production of specific antibodies
What does the primary immune response involve?
It involves the activation of specific immune cells that recognise the antigens, leading to the production of antibodies and memory cells for future defense
What is an antigen?
An antigen is any part of an organism or substance that is recognised as non - self (foreign) by the immune system and stimulates an immune response
What are antigens usually made of?
Antigens are usually proteins that are part of the cell surface membrane or cell walls of invading cells or abnormal body cells
How do antigens trigger an immune response?
The presence of an antigen stimulates the immune system to produce specific antibodies as part of the body’s defence mechanism
Where can antigens be found?
Antigens can be found on the surface of microorganisms, invading cells, or abnormal body cells
What is the role of antibodies in the immune response?
Antibodies are produced in response to antigens and help destroy foreign substances, aiding in the body’s defence against infection
