What is the difference between Plasma and Interstitial fluid?
Plasma: In blood vessels Interstitial: In between cells
What is the function of the lymphatic system?
1. Return leaked plasma to bloodstream 2. Screen lymph for foreign sybstances 3. House lymphocytes 4. Transport Dietary lipids
What is the flow of lymph?
What are the characteristics of lymph capillaries?
Closed-ended tubes. Overlapping cells form one-way flaps. Contain Lacteals (special capillaries in small intestine)
What do lymphatic vessels have? What are the two types? Which do you have more of and why?
Have valves. 1. Afferent (to lymph node) 2. Efferent (away from node) More afferent in order to force lymph to slow down.
What is the purpose of the Lymph nodes?
To screen lymph for foreign antigens and initiate immune response.
List the Lymphatic Nodes.
Cervical, pericranial, Tracheal, Axillary, Deep, Inguinal, Femoral.
Which ducts drain the blue/green areas? Where do they both empty into?
Blue=Right Lymphatic Duct
Green: Thoracic Duct
Both empty at junction of internal jugular and subclavian vein.
What is the cisterna chyli?
collecting region that empties into thoracic.
What are lymphatic nodules? examples?
Lyphatic tissue without a capsule. Tonsils are an example.
What are the lymphatic organs?
Lymph nodes, Thymus, Spleen
What is the function of the thymus? What happens to it as we age?
Site for T-Lymphocyte maturation. Shrinks as fills with adipose and fibrous CT.
Where is the location of the Spleen? White and red pulp functions?
Between 9th and 11th ribs
White pulp: Stores WBC
Red pulp: Stores RBC and recycle RBC