BIOL 1202 : Si Test 2 1
SI: David Barry
Professor: Dr. Crousillac
Immune System
SI Session #5
Innate immunity describes a rapid response to pathogens using a small set of receptors in
___________________. Why does this specific type of immunity only require a small set of
receptors?
List the 3 barrier defenses and 4 internal defenses that associate with innate immunity.
Barrier defenses:
1. Skin
2.
3.
Internal defenses:
1.
2. Natural Killer cells
3. Antimicrobial proteins
4.
The skin is important because it continuously sheds, removing pathogens/microbes that
may have gained a foothold. What is the pH of your skin and what enzyme is found here
that is important for defense?
Phagocytes are types of leukocytes that ingest invading microorganisms. There are 4
types:
1. Neutrophils
2. Macrophages
3. Eosinophils
4. Dendritic cells
After phagocytosis happens, what is the resulting action inside the phagocytic cell?
Interferons are released by ____________ infected cells. This is initiated by a fever and
helps healthy cells resist infection while activating macrophages.
The first step of the inflammatory response is important in increasing the permeability of
the capillaries, so proteins and clotting elements can reach the damaged site. This is
achieved by two types of cells that release chemical signals. Name the types of cells and
their corresponding signals.
1.
2. Mast cells –
The resulting 3 steps of the inflammatory response are:
2. Antimicrobial proteins and clotting elements enter the site
3.
4.
Natural killer cells attack virally infected or cancerous ______________. They release
chemicals that initiate ______________.
Document Summary
Innate immunity describes a rapid response to pathogens using a small set of receptors in. List the 3 barrier defenses and 4 internal defenses that associate with innate immunity. Internal defenses: natural killer cells, antimicrobial proteins. The skin is important because it continuously sheds, removing pathogens/microbes that may have gained a foothold. Phagocytes are types of leukocytes that ingest invading microorganisms. There are 4 types: neutrophils, macrophages, eosinophils, dendritic cells. This is initiated by a fever and helps healthy cells resist infection while activating macrophages. The first step of the inflammatory response is important in increasing the permeability of the capillaries, so proteins and clotting elements can reach the damaged site. This is achieved by two types of cells that release chemical signals. Name the types of cells and their corresponding signals: mast cells . The resulting 3 steps of the inflammatory response are: Antimicrobial proteins and clotting elements enter the site.
