Immune System Lab Quiz Flashcards
What are the two types of defense systems?
Innate
Adaptive
What is part of the innate immune system?
Macrophage
Natural killer cell
Neutrophil
What types of WBC’s are in the adaptive immune system?
B cell
T cell
What is the 1st line of defense of the immune system?
- Innate
- External
- Skin
- Immediately engages with foreign objects using an arsenal of the stuff we were born with (physical chemical barriers)
- Natural external barricades deploy chemical defenses
3 components of internal (2nd line of defense)
- Neutrophils
- Macrophages
- Natural killer cells
What does a penetrated barrier do?
release of phagocytic cells (WBCs from bone marrow)
Neutrophils
devour and self-destruct
- Most abundant
- Easily identified following death (pus)
Macrophages
- digest and spit out
- Tougher WBC (“big eater”)
- Act as a signaler via break and brag method
- ->Break invader, display remains on grooved proteins
What do Natural Killer Cells do?
- Death poke (apoptosis)
- Patrol blood and lymph looking for abnormal cells
What does barrier disruption cue?
inflammatory response
Learned Immunity
Acquired through differentiating friend from foe
Antigens
Large signaling molecules not normally found in the body
- -> found on the surfaces of pathogens from outside sources
- -> act as flags that rev up immune system
Adaptive vs. Innate
Adaptive takes more time to recruit
- commits to memory
- specific threat detection
- Systemic action
Systemic action
Humoral immunity –> B cells (antibodies
Cellular defenses –> T cells
B cell
Lymphocyte produced and matured in bone marrow
Ability to remember friend from foe
Patrol body’s humors (blood and lymph) inactively until antigen comes along
