(Section B: Immunology) Lecture 09: Introduction Flashcards
1
Q
Innate vs. Adaptive
A
- Innate: Stays same, doesn’t learn
- Adaptive: Reacts faster and larger second time
2
Q
Purpose of Immune Systems
A
- “Defense against Invader”
- “Self-nonself discrimination”
- “Detection of Danger/Damage”
- Achieve peace and harmony w/ our enemies”
3
Q
Components of the Immune System
A
- Barriers
- Cells
- Soluble Molecules (Humoral)
4
Q
What is the analogy used for components of the immune system?
A
- Barriers, “Wall”
- Soldiers, “Soldiers”
- Soluble Molecules (Humoral), “Weapons”
5
Q
What types of barriers are there?
A
- Mechanical
- Chemical
- Microbial
- Nutritional
6
Q
What the main cells in mechanical barriers?
A
Epithelial cells
7
Q
Describe:
Epithelial cells
A
- Lines the surfaces of various tracts (stomach, throat, skin etc.)
8
Q
How are epithelial cells joined? Why?
A
Prevent pathogens from entering
9
Q
How do epithelial cells work as mechanical barriers?
A
- Regeneration
- Desquamation (shedding)
- Secretions (mucus etc.)
10
Q
What is the first line of defense?
A
Skin
11
Q
What are skin cells known as?
A
Keratinocytes
12
Q
What do keratinocytes form?
A
The corneal layer (keratin “shield”)
13
Q
What are goblet cells and where are they found?
A
Goblet cells makes mucus and secretions
Found in the lungs
14
Q
What is responsible for moving things out (coughing) in lungs?
A
Cilia
15
Q
What do chemical barriers include?
A
Includes enzymes
