Intro To The Lymphatic System And Its Diseases Flashcards
Is the lymphatic system open or closed?
Open
Give 3 features of lymphatic capillaries
Blind ended
No smooth muscle
Incontinuous basement membrane
Give 3 features of collecting vessels
Smooth muscle coverage
Luminal valves
Basement membranes
What is a pumping unit?
Segment of lymphatic vessels between two valves
What does lymphatic drainage begin with?
The absorption of fluid from tissues
What do lymph nodes do?
Filter the lymph and interact with the immune system
What is lymph?
Interstitial fluid containing salts, proteins and cells, originally formed from plasma ultrafiltrate
What are lymph nodes?
Filter stations positioned at intervals along the lymph drainage route
What is another word for interstitial?
tissue
What two basic functions do lymph nodes perform?
Cleaning the lymph before it re-enters the blood stream
Monitoring the lymph for signs of infections
What are the three functions of the lymphatic system?
Fluid balance
Immune function
Fat absorption
What controls the amount of fluid in a blood vessel?
The balance of forces in terms of hydrostatic pressure and osmotic pressure of proteins in the blood
Where is the bulk of the fluid from the blood system drained into?
Lymphatic capillaries
Does reabsorption take place along the blood vessel?
Not at homeostasis
What is the rate limiting step for fluid drainage?
The lymphatic system