L7 Flashcards
What does the function of capillaries demand?
Very thin walls
Large total cross sectional area of capillary bed
Slow and smooth blood flow
What are the 3 types of capillaries?
Continuous, fenestrated, sinusoidal
What is the diameter of continuous capillaries?
8-10 microns
what is the diameter of fenestrated capillaries?
8-10 microns
what is the diameter of sinusoidal capilarries?
30-40microns
What is the lympg vascular systems functions?
drains excess tissue fluid and returns them to blood
filters foreign materal from lymph
screens lymph for forgin antigens and release antibodies in response
absorbs fat from intestine and transports to blood
What is the Lymphatic systems structure?
Large blind ending capillaries
larger (thin wall) collecting vessels have numerous valves to prevent flow back