Lymphatics and Full body treatment Flashcards
(47 cards)
What are the three components of the lymphatic system?
- Lymph
- Channels
- Organized lymph tissue
How soon will a human die if the lymph system stops functioning?
24 hours
What is lymph?
Clear, coagulable fluid that passes from the intercellular space into lymphatic vessels
What does lymph resemble?
Blood plasma
What are the cells that comprise lymph?
Lymphocytes
WBCs
What are the functions of lymph (4)?
- remove bacteria and proteins
- Transport fat
- Supply lymphocytes
- Bathe and nourish the tissues
What is the most organized lymph tissue?
Lymph nodes
What are lymph nodes?
Organized lymphatic tissues dispersed along the course of the lymph vessels
How many deep lymph nodes are there?
400-450
What are the two major functions of the lymph node?
- Filter lymph via macrophages
- Activates the immune system if microorganisms are detected
Where isn’t the lymphatic system present? (4)
- Brain/spinal cord
- Epidermis
- Endomysium
- Bones, teeth, bone marrow
What type of lymph tissue is found in the bone marrow, epidermis, brain/spinal cord, and endomysium?
Pre-lymphatics, which eventually empty into lymphatic vessels
What are the three main cellular structural components of the lymph system?
- Endothelial cells
- Valves
- Anchoring filaments
What are the three main organizations of the lymphatic system?
- Superficial system
- Deep system
- Organ-specific system
What connects the superficial and deep lymphatic systems? What is the function of these?
- Perforator vessels
- Conveys lymph toward the surface
What are the 4 functions of the lymphatics?
- Nutrition
- maintaining fluid balance
- purification and cleansing of tissues
- Defense
How many liters of fluid leak out of the capillaries daily? What percent of this drains back into capillaries? Where does the rest go?
- 30 L
- 90% drains back into the capillaries
- 10% drains into lymph
What percent of plasma proteins are carried back to the vascular system via lymph?
50%
What is the primary means of return of proteins after their efflux from the arterial capillaries?
Lymphatics
What are the four regions of the lymphatic system, based on the vessel walls?
- Lymphatic capillaries
- Precollectors
- Collectors
- Lymphatic trunks
What does the cisterna Chyli drain?
Abdomen, pelvis and lower limbs
Where is the cisterna chyli located?
Anterior right side of the L1-L2 vertebral bodies, but behind the right crus
What is the largest lymphatic vessel in the body?
Left lymphatic duct.
Where does the LLD drain?
Left jugulo-subclavian junction