Lymphatic tissue

Question 1

Lymphatic system

Answer 1

• provides a means to return excess fluid & protein that leaked out of capillaries back into the venous system

Other functions:
Defense against disease Transport absorbed fat

Question 2

Oedema:

Answer 2

accumulation of interstitial fluid > reduced exchange between blood & cells

Question 3

Oedema:

Abnormal physical forces:

Answer 3

1. Reduced concentration of plasma proteins - kidney disease, reduced liver function, protein-deficient
2. Increased permeability of capillary walls - histamine-induced widening of pores (blisters and hives)

Question 4

Summary

Answer 4

• Arteries: pressure reservoir
• Arterioles: primary resistance vessels
• Capillaries: sites of exchange
  • Diffusion vs bulk flow
• Lympha4c system
  • Cardiovascular role

Question 5

Oedema:

Abnormal physical forces: 2

Answer 5

3. Increased venous pressure - increase capillary pressure - heart failure, pregnancy
4. Blockage of lymph vessels
   - surgical removal of lymph nodes