Lymphatics

Question 1

Components of lymphatics

Answer 1

-lymphatic capillaries
-collecting lymphatic vessels
-lymph nodes
-thoracic duct & right lymphatic trunk

Question 2

Lymphatic capillaries function

Answer 2

-absorb interstitial solutes, macromolecules, and immune cells that extravasate from the blood vascular system

Question 3

Collecting lymphatic vessels function

Answer 3

-contain zipper-like junctions, lymphatic valves, and contractile smooth muscle cells that enable unidirectional propulsion of lymph

Question 4

Forces affecting arterial side

Answer 4

Moving outward
- Capillary pressure
- Negative interstitial free fluid pressure
- Interstitial fluid colloid osmotic pressure

Moving inward
- Plasma colloid osmotic pressure

Question 5

Arterial flow into the lymphatic system

Answer 5

• Net outward force
• Lymphatic system is highly permeable and takes in everything pushed out of blood

Question 6

Forces affecting venous side

Answer 6

Moving inward
- Plasma colloid osmotic pressure

Moving outward
- Capillary pressure
- Negative interstitial free fluid pressure
- Interstitial fluid colloid osmotic pressure

Question 7

Venous flow and lymphatic system

Answer 7

-net inward force
-whatever is not picked up by tissues or moved into the lymphatics will be pulled into the veinous system