20 Lymphatic Flashcards
Lymph vessels:
Return tissue fluid back to blood stream
Absorption of fats from small intestine
Lymphoid tissue helps defend the body against disease
Lymph is composed of
water, electrolytes, waste from metabolizing cells, and some protein that leaks out of the capillaries of the systemic circulation
Where does lymph come from?
formed from the plasma during capillary echange (found in interstitial space)
__ L/day of lymph is filtered from the blood into the ____. It leaves here through the _____ which then carry the lymph toward the heart and eventually empty it into the ___.
20 L/day
interstitium(tissue spaces)
lymphatic vessels
blood
Lymphed edema
accumulation of lymph due to failure of lymphatic system
Blockage in lymph vessels causes
elephantiasis (swelling, thickened skin)
Lymph vessels have ___-___ valves which cause the lymph to move in one direction
one way
Lymph moves towards
the heart
Lymph flows toward the heart through a series of larger and larger ______ ______ until it reaches the large ___
Lymphatic vessels
Lymphatic ducts
The lymphatic ducts empty into the ________ ______, then into the ________
Subclavian Veins
bloodstream
Lymph movement through vessels (3)
- skeletal action pump (muscles contracting)
- respiratory pump (- pressure from inhalation)
- smooth muscle contraction within wall of vessels
Lymphoid organs filter,
Filter blood/lymph for pathogens and cancerous cells
Lymph nodes
Cluster of lymphoid tissue; filter the lymph
Vessels going towards node
afferent
Vessels leaving node
efferent
