Lymphatic System Flashcards
What are the functions of the lymphatic system?
Drain tissue
Return plasma and plasma proteins
Absorbed fat transport from gut
Immunity
What do lymphatic vessels absorb that blood vessels do not?
Plasma proteins
Give examples of lymphatic tissue
Thymus
Spleen
Tonsils
Nodules
Do lymphatic vessels have basement membrane?
No
Why do lymphatic vessels carry lost plasma and plasma proteins back up to the circulation?
To prevent a decrease in blood pressure
What is lymph composed of?
Fluid and plasma proteins only
What does lymph gain s it flows through lymphatic capillaries and channels?
Lymphocytes
Where are fats added to lymph vessels?
In the small intestine
What does the flow in the lymphatic system rely on?
Muscle contraction
Pressure changes
Gravity
How many lymph nodes are there in a young adult?
450
What is efferent lymph?
Drainage out of the lymph node
What is afferent lymph?
Draining into lymph node
When do lymph nodes become larger?
When they are infected
Where are carbon particles filtered out?
Lymph nodes
Where are lymphatic vessels absent from?
Eyeballs CNS Inner ear Epidermis Cartilage Bone
Where are superficial inguinal nodes locate?
In and around the femoral triangle at the base of the lower limb
Where does deep drainage in the lymphatic system ultimately lead back to?
The venous system
What is a primary tumour of a lymph node?
Hodgkins
What does the lymphatic system proved a good route for?
The spreading of cancer cells
Primary tumours to metastasise
What are the 2 large lymph ducts?
Thoracic duct
Right lymphatic duct
Where does the right lymphatic drug drain?
The right upper quadrant of the body
Where does the thoracic duct drain?
Everywhere except the right upper quadrant of the body
Where does the lymphatic drain back into the venous system?
At the subclavian junction
What mature in lymphoid tissue?
Lymphocytes