Test 4 Ch23

Lymphatic function
- Circulation
- >maintain blood volume
- >absorb excess fluid from tissues
- >return fluid to subclavian vein
- Defense
- >fight infections
- >destroy pathogens
- >produce lymphocytes
- >produce antibodies
Excess tissue fluid forms from...

blood capillaries
Lymph

Tissue fluid absorbed into lymph capillaries
Lymph capillaries
- absorb excess fluid from interstitial spaces
- also absorb bacteria, virus, other cells (if present)
Features of lymph capillaries...
- very permeable endothelium
- one way flaps (fluid only flows in)
Lacteals
- lymph capillareis in small intestine
- absorb lipids
Thoracic duct
- returns lymph to left subclavian veins
- collects all lymph except right upper quadrant
Cisterna chyli

collects from lower extremities, abdomen
Right lymphatic duct
- returns lymph to right subclavian vein
- collects lymph from right upper quadrant
Lymph node
- collection of lymphoid cells
- destroy pathogens
- filter lymph before return to blood
afferent lymphatic vessels

enters node
efferent lymphatic vessels

leaves node
follicles

lymphoid tissue

Author

issacgoboom

227419

Card Set

Test 4 Ch23

Description

lol

Updated

2013-07-17T17:50:22Z