Unit 14: Immunology Flashcards
2 types of immune system division?
- innate immunity (non specific)
2. acquired immunity (specific)
what is innate immunity? ex?
PREVENT ANY INFECTION INTO THE BODY BY FIGHTING WITH RAPID RESPONSE
ex: barrer defenses
- nose: mucus trap particles from going to lungs
- eyes: lysozyme in tears that destroy pathogens
- vagina: beneficial lactobacillus bacteria makes lactic acid to lower pH
- mouth: bacteriophage viruses kill bacteria
what is adaptive immunity? ex?
RESPOND LYMPHOCYTES THAT DETECT ANTIGENS WITH RECEPTORS. respond with SPECIFIC ATTACK that’s STRONGER then innate but slower
ex: response of B&T cells (aka lymphocytes)
Why is skin important for immune system?
physical barrier to block pathogens (bad) from entering
What is antigen? most common?
anything that cause immune system to PRODUCE ANTIBODIES
most common: pathogens (bacteria or virus, ) or allergens (nuts)
what is often of antigens?
they’re proteins (viral capsid & spike protein)
what does immune system rely on?
molecules on the surface of cells to detect SELF or NOSELF cells
what are “self” cells?
OUR OWN CELLS AND MOLECULES
have correct MHCs, GLYCOPROTEIN & GLYCOLIPID with unique OLIGOSACCHRIDE recognized by white blood cells as “self cells”
what are nonself/foreign cells?
cell, molecule, or particle with INCORRECT MHC’s, glycoproteins, glycolipds -> TRIGGER IMMUNE SYSTEM TO ATTACK & DESTROY IT
what differentiates in the bone marrow?
- red blood cells (erythrocytes_
- white blood cells (leukocytes)
- platelets (thrombocytes)
what does the macrophage do?
ENGULF PATHOGEN CELLS (bad) BY PHAGOCYTOSIS
what is a macrophage?
a type of white blood cell involved with INNATE immune system
what are B&T cells?
LYMPHOCYTES (white blood cell) part of ADAPTIVE immune system
what do B&T cells do?
PRODUCE ANTIBODIES TO FIGHT INFECTIONS
what do T cells do?
- product antibodies to fight infections
2. destroy infected & cancerous cells of our body
