Lymphatics Flashcards
3 Functions of Lymphatic System
Fluid Recovery
- 2-4L per H2O/day
- 1/4 - 1/2 Plamsa Proteins
Immunity
-Filter/destroy pathogens
4 Components of Lymphatic System
Lymph
-interstitial fluid that enters lymphatic system
Lymphatic Vessels
-system of 1-way drainage valves
Lymphatic Tissues
-Contain LOTS of reticular protein strands
Lymphatic Organs
-spleen, thymus, tonsils, peyers patches,
Spleen
- NOT connected to lymphatic vessels
- node:lymph as spleen:blood
- filters blood and recognizes/ destroys pathogens
- recycles RBCs
- storage (heme, iron, platelets)
Tonsils
- Detect pathogens in mouth.
- has clefts filled with WBC’s to trap pathogens
Peyers Patches
- found in digestive tract
- MALT MUCOSE ASSOCIATED lymphatic tissue
- Function as pathogen ID and destroy source in digestive tract
Immunity
resistance to infections disease and harmful surfaces
antigen
foreign invader
AKA: allergen, pathogen,
-contains foreign protein
7 NON SPECIFIC Body Defenses
1) Mechanical Barrier
- integument. mucus membranes
2) Chemical Secretions
- saliva/sweat/stomach acid (HCl)
3)Phagocytes
4) Natural Killer Cells (NKC)
- “police” for OWN “rogue” cells (AKA: cancer)
5) Anit-microbial Proteins
6) Inflammation
- histamine/heparin
7) Fever
- WBC release
- pyrogen = causes fever
3 Specific Defences
Direct Cell attack
Chemical Secretion (poisen)
Antibodies
Natural Active Immunity
Get disease and survive, become immune
Natural Passive Immunity
Immunity passed from mother, bacteria from mother colonize offspring to aid in immunity
Aquired Active Immunity
Immunity gained from a vaccine of dead pathogen, develop immunity with out disease
Aquired Passive Immunity
Serum / anti-venom / anti-toxin
-comes from outside source and only good for single use
Anti-Body Effectiveness (PLAN)
P- Precipitate
L- Lysis
A- Agglutination
N- Neutralization
