Innate Immunity Flashcards
What is the physical barrier for the first line of defense? What is the chemical barrier?
Skin and mucous membranes
How does the epidermis remove microbes?
Shredding
How does the mucous membrane trap microbes?
Mucous
What is made when viruses infect the body and protect uninfected host cells?
Interferons
What enhances immune, allergic, and inflammatory reactions via a group of inactive proteins in the blood plasma? It causes cytolysis of microbes.
Complement system
They inhibit the growth of bacteria by reducing the available iron.
Iron-binding proteins
They are short peptides that have a broad spectrum of antimicrobial activity. Examples are dermcidin, defensins, and cathelicidins.
Antimicrobial proteins
What effects does histamine do to the damaged tissue during inflammation?
Increase in permeability and vasodilation
What is converted into fibrin threads to trap invading organisms?
Fibrinogen
The collection of dead cells during inflammation.
Pus formation
What attract phagocytes to the site of injury?
Chemotaxis
Confines and destroys microbes; it initiates tissue repair
Inflammation
