Immune Lecture Flashcards
(44 cards)
Immune Disorders
Autoimmunity
Autoimmune disease where body and immune system attack itself
Immune Disorders
Hypersensitivity
Overly sensitive
Immune Disorders
Gammopathies
Abnormal proliferation of lymphoid cells producing immunoglobulins
Immune Disorders
Immune Deficiencies
Primary-born with defected immune system
Secondary-acquired defects in immune system like HIV, age, & environmental factors such as nutrition
Development of cells of the Immune System
Explain how lymphocytes are made in bone marrow and where the mature and what they’re called
Bone marrow produces lymphocytes and so B-cells (B lymphocytes) mature in the bone marrow and T-cells (T lymphocytes) mature in the thymus
What response do B-cells and T-cells do?
And explain what the responses are and what B cells do and what T cells do
B cells do humoral response in which they release antibodies and they attach to the organism and stop it from working and make it innert.
T cells do cell mediated response where the cytotoxic Killer T cells attack the microbe directly and cause the microbe to lysis.
CBC with diff
Includes percentages of each type of WBC
CBC without diff
Does not have percentages of each type of WBC.
CBC with diff helps to determine to see if the illness is caused by bacteria, virus, or leukemia.
So (what I’m understanding is that) depending on which type of WBC is at an elevated rate you can tell if the illness is caused by bacteria, virus, or leukemia.
Neutrophils
Most abundant
First one on site in response to pathogen
For bacteria
Eosinophils/Basophils
Eosinophils kill parasites and used for allergic reactions.
Basophils release histamine during allergic reaction and have the least number.
Monocytes
Clean up dead stuff and are the “garbage men” of the cell
Lymphocytes
B cells and T cells
go over the B cells and T cells and how/where they are made and what type of response they have
B cells and T cells response interact with each other it’s not just one or the other!!
FAB 5 CBC
WBC
RBC
Pla
Hgb
Hct
WBC: 5-10k
RBC: 4.2 - 6.2 million
Pla: 100-400k
Hgb: 12-18
Hct: 40-50%
FAB 5 Chemistry
Na K Glu BUN Creatnin
Na 135-145 K 3.5-5.0 Glu 60-100 BUN 8-20 Creatnin 0.6-1.5
Shift to the Left
Shift to the left means that the body is losing the battle and all the WBC are out fighting including the bands (immature WBC) so you know the infection is serious and severe.
Normally the band percentage is 2-6% but in this case the body is kicking the bands out into the blood to help fight the infection so the percentage of bands will be higher.
Ratio of immature WBC higher than mature WBC
Seen in infection, hypoxia/shock, inflammation
Left shift can occur with High or Low WBC
High WBC means that the body is releasing neutrophils and bands to fight off the overwhelming infection.
Low WBC means the the infection is at such high intensity that the supply of WBC does not meet the demand of WBC or recovery from bone marrow suppression.
Shift to the right
Ratio of mature WBC is more than immature WBC
A shift to the right shows that there is a more than usual number of nuclear segments and that the infection is clearing so the store of polymorphonuclear leukocytes is exhausted and there is not enough to meet the demand that is needed to fight the infection.
Seen with bone marrow suppression, pernicious anemia, radiation sickness, viral infections, hemolysis, drugs, cancer, allergies.
Shift to left compared to shift to right
Shift to left: increased bands, acute infection, usually bacterial
Shift to right: increased mature WBC, intense infection, viral infection
Humoral Defense - Antibodies
Agglutination
One anti-body that acts as a cross link between 2 antigens and causes them to clump together to facilitate phagocytosis.
Humoral Defense - Antibodies
Neutralization
Antibody binds to pathogen to block pathogen from target
Humoral Defense - Antibodies
Opsonization
Antibody marks antigen and “flags” it to initiate phagocytosis on it
Humoral Defense - Antibodies
Complement System
Inflammation
Enhances ability of antibodies and phagocytic cells to clear pathogens from organism and complement factors are found in the liver.
Immunoglobulins (Antibodies)
IgG
Granulocytes and greatest number 75%
- found in bloodborne and tissue infections
- protects against viral and bacterial infections