Immune System Flashcards
What is the main function of the immune system ?
Protects the body from infections and foreign substances.
What is the difference between non-specific and specific immunity?
Non-specific fights all germs, specific targets one germ at a time
What are the examples of non-specific immunity?
Skin , fever , inflammation
What is inherited (genetic) immunity?
Immunity you are born with from your parents.
What is acquired immunity?
Immunity you develop from infections or vaccines.
What is active immunity?
Your body makes antibodies (e.g from infection or vaccine)
What is passive immunity?
You receive antibodies from another source (e.g., breast milk, injections )
What do antibodies do ?
Bind to germs and mark them for destruction.
What do complement proteins do ?
Help destroy germs.
What do neutrophils do ?
First responders that attack bacteria
What do macrophages do ?
Engulf big germs and dead cells
What do T-cells do ?
Kill infected cells and control immune responses
What do B-cells do ?
Make antibodies
What does the immune system do ?
It protects your body from germs (bacteria, viruses)
It remembers past infections to fight them faster next time.
Types of Immunity
Non-specific ( Innate) — First defense ( skin, fever , inflammation)
Types of immunity
Specific (Adaptive) — Rememberd germs and attacks them using T-cells & B-cells
Types of Immunity
Inherited ( Genetic ) Immunity— you are born with it from your parents.
Types of immunity
Acquired Immunity — You gain it through infections or vaccines.
Types of immunity
Active immunity— Your body makes its own antibodies (e.g, from infection or vaccines).
Types of Immunity
Passive immunity — You receive ready -made antibodies (e.g., breast milk , antibody injections)
How do antibodies & complement proteins work ?
Antibodies— Find and attach to germs , marking them for destruction
Complement Proteins— Helps destroy germs by breaking their cells apart.
Immune System Cells
Phagocytes (Eat germs)
Neutrophils- First to attack bacteria
Monocytes — Become macrophages
Macrophages— Eat big germs & dead cells.
Lymphocytes (Control the immune system )
T Cells— Kill infected cells and control immune responses.
B Cells— Make antibodies to fight infections
