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40 Cards in this Set
- Front
- Back
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another name for tissue fluid |
interstitial fluid |
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what is the major function of the lymphatic system? |
to drain excess interstitial fluid and return this fluid to the bloodstream to help maintain normal blood volume |
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lymphocytes are a type of what type of blood cell? |
white |
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the lymphatic system produces, maintains and distributes these |
lymphocytes |
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this system provides an alternate transportation route for hormones, nutrients, and waste products |
lymphatic system |
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excess fluid is __________________ which means its found in the tissues |
interstitial |
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very large _________________ are also slowly leaking from the capillaries that are also collecting in the interstitial tissue |
proteins |
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these collect the interstitial fluid and all of the proteins around the capillaries so they can return it to the blood stream |
lymphatic vessels |
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when interstitial fluid gets into a lymphatic vessel what is it called? |
lymph |
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lymph travels through many lymphatic vessels until it gets into what?
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lymphatic duct |
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the lymphatic duct empties the lymph into what at the root of the neck? |
venous blood |
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how much lymph is returned to the blood stream daily? |
3 liters |
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when a blockage of lymphatic vessels causes the effected body region to swell with excess body fluid |
edema |
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what are the 2 lymphatic ducts |
thoracic and right lymphatic |
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this lymphatic duct ascends along the vertebral bodies |
thoracic duct |
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when the thoracic duct gets to the root of the neck it turns and empties its lymph into the venous circulation at the junction of what 2 veins? |
left subclavian and left internal jugular |
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the lymph in the thoracic duct comes from what specific 3/4 of the body? |
left side of the head, left side of the thorax, left upper limb and the body's entire lower half |
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what duct is bigger? |
thoracic duct |
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the right lymphatic duct drains its lymph into the venous circulation at the junction of what 2 veins? |
right subclavian and right internal jugular |
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where does the lymph carried by the right lymphatic duct come from? |
the right side of the head and neck, right side of the thorax, and right upper limb |
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why do we have lymph nodes along the lymphatic vessels? |
they function as a type of filter than can trap and destroy debris and most pathogens
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bean shaped structures or organs situated along lymph vessels that cleanse the lymph of pathogens |
lymph nodes |
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how many lymph nodes are in the human body? |
500 |
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how big are lymph nodes? |
from 1-25 mm in diameter |
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lymph nodes are often found in clusters in these 3 regions? |
cervial region, axillary region, and inguinal region |
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list the lymph organs |
bone marrow, thymus gland, lymph nodes, spleen, tonsils, and nodules found in the wall of the small intestine and the vermiform appendix |
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this is bi-lobed and located in the mediastinum just posterior to the sternum and anterior to the trachea and great vessels |
thymus gland |
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this lymph organ is an important lymphatic organ during childhood |
thymus gland |
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the thymus gland weight __________ in infants and ___________ in the elderly |
70 grams, 3 grams |
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the hormones produced in the thymus gland lead to the production of what? |
other lymphatic organs |
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this is located in the upper left quadrant of the abdominal cavity |
spleen |
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the largest mass of lymphoid tissue in your body |
spleen |
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the spleen stores about 1/3 of your body's what? |
platelets |
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what sits right on top of the spleen? |
diaphragm |
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where are blood cells produced during fetal development? |
spleen |
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these tonsils are found at the base of your tongue |
lingual tonsils |
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these tonsils are found on either side of the fosses |
palatine tonsils |
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these are also known as your adneoids |
pharyngeal tonsils |
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the role of the lymphatic organs |
production of lymphocytes |
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specialized white blood cells that fight off infection |
lymphocytes |
