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11 Cards in this Set
- Front
- Back
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What is the main difference in components between interstitial fluid and plasma? |
Interstitial fluid has less protein as only small proteins are able to transverse the capillary walls |
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What is the main difference between interstitial fluid and lymph? |
Location:when interstitial fluid enter the lymphatic capillaries it becomes lymph |
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(a)What force causes substances to leave the blood capillaries? (b) What is the main substance lost through the capillaries as a result of this force |
hydrostaticpressure water |
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(a)What causes water to become reabsorbed into the blood capillaries? (b) what prevents proteins being reabsorbed? |
Osmosis concentration gradient of proteins between interstitial spaces andcapillaries |
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Draw a diagram illustrating the filtration and reabsorption in the capillaries |
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Describe how lymph is circulated around the body |
skeletal muscle pump: muscularcontractions create a milking action which pushes lymph againstgravity through the lymphatic vessels. Back flow is prevented byvalves. respiratory pump: whenbreathing in, pressure increases, pushing lymph towards the thorax.When the pressure is reversed due to exhalation, back flow isprevented by the one way valves. |
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What are the three functions of the lymphatic system? |
(1)Collect interstitial fluid and return relevant components to theblood (2)Transport dietary lipids and lipid-soluble vitamins (A, D, E and K)from the gastrointestinal tract (3)Adaptive immune responses against particular microbes and abnormalcells |
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what is the name of the specialised lymphatic capillaries in thesmall intestine and what is their function? |
(1)lacteals (2) reabsorption of dietary lipids to return them to theblood. |
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In what region of thelymph nodes would you find lymphatic nodules? |
The outer cortex |
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What are the two main lymphatic ducts and where to they collect lymph from? |
right lymphatic duct: upper right quadrant thoracic duct: everywhere else |
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How is the passage of lymph through lymph nodes slowed? |
There are more afferent vessels then efferent ones |
