anp2 lecture

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Author:
cgat45
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176545
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anp2 lecture
Updated:
2012-10-09 14:42:03
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lymphatic system
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lecture
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  1. anitduretic hormone
    • stimulates the kidney to conserve water
    • responds to an increase in blood osmolarity or decrease in blood volume
    • osmolarity- concentration of bcells
    • causes vasoconstriction
    • result in increase of bp
  2. atrial natriutetic peptide
    • released by atria
    • lowers bp
    • vasodaiation
    • increases salt (via osmosis)
    • antagonist to adh and aldostrone
  3. no (nitric oxide)
    • paricine
    • vasodialtion
    • effects are short lived
    • cause muscle to relax
    • released by endothelial cells in response to hig bp flow
    • may be a major factor in affecting bp on a local level
  4. lymphatic system
    • draining excess interstital fluid
    • transporting dietary lipid and lipid soulable vitamins a,d,e,k to blood
    • facilitating the immune response
    • procducem maintaing and distrubute lymphocytes
  5. pathogens
    • bacteria
    • viruses
    • funis
    • anything forgien
  6. lymph
    • fluid that is present in the lympatic sxystem and is identical to the composition of intersitial fluid
    • formed by capillar filtration
  7. lymphatic vessels
    • resemble veins. but have thinner walls and many more valves
    • under lower pressure then the cardiovasular system move viat contraction of skeletal muscle
  8. lymph capillaries
    • smallest vessel
    • blind ended do not connect to anything (on way road not connected to nothing)
    • start wher cardiovasular capillary are
    • slightly bigger then cardiovascular capillaries (blood capillaries)
    • greater permeablility then blood capilaries
    • lymph have overlap
    • located throghout teh body except avascular tissue(cartilage), spleen. redbone marrow, and cns
    • structure premits fluid to enter, but not leave
  9. lacteal
    • lymphatic capillaries associated with the small intestines
    • responsible for absorption of nutrients
  10. cyle
    • composstion of fluid in lacteals
    • milky color dute to excess fats
  11. small lymphatic vessels
    • smaller then veins
    • valves
  12. lymph trunks and ducts
    • vessels leaving chains of nodes unite to form a lymphatic trunk
    • these passes their fluid into ducts which return flused to the venous system
  13. thoracic duct
    • right lymphatic duct
    • the rest of the body
    • fluid from both legs and left side of arm head
  14. right lympathic duct
    • all right arm
    • 1st quarderent
    • right side of head
    • upper right portion of the body
  15. lymph nodes(filter lymph)
    • small bean shped structure
    • approximatley 600
    • scattered throughout body, but concetrations in neck, groin, and arm pit areas
    • function to filter lymph
    • contain macrophages. concetrations of lymphocyte
  16. lymph nodes struture
    • capsule- the foundation of structure
    • trabeculae- not hollow have twho halves
    • subcapular space
    • reticular fibers and dendritic cells form a mesh filter
  17. cortex
    • outer layer- lymphatic nodules (bcells)
    • inner- tcells
  18. medulla
    • bcell and macrophages
    • medullary cords
  19. flow through lymph nodes
    • is one way
    • enters afferent capillaries(move in)
    • flows through sereis of compartments where it is flitered
    • flows out through 1-2 efferent vessels (moving out)
    • lymph typically passes from one node to another within a chain
  20. thymus
    • endocrine gland
    • produces hormones that directly production of lymphocytes
    • primary lympathic organ
    • produces hormone necessary from production of lymphoclytes
    • mature site for tcells
    • tcells- produce in bone marrow but mature in thymus gland
    • large in infants and atrophies with age
    • atrophies- reduce, get smaller, not as active
  21. red bone marrow
    • also primary lymphatic organ
    • form lymphoctyes
  22. spleen
    largest in mass of lymphatic tissue, but is not a primary lymphatic organ (sinusoide capillaries)
  23. sinuoid capillaries contains 2 types of tissue
    • white pulp- lymphatic tissue
    • red pulp- region responsible for removal of rbcs
    • storage of platelets and rbc
    • hempoises¬†in infants
  24. lymph nodeuls
    • concetration of lymphatic tissue not sourrounded by a capsule
    • associated with mucosal membrane
    • mucosa- associated lymphatic tissue (malt)
  25. peyers patches
    assocaited with gi tracts
  26. lymphocytes
    • tcells- originated in red bone marrow/ thymus dependent - fully mature in thymus gland
    • bcells-produce antibodies/ bone marrow derived, mature in redbone marrow
    • natural killer cells- ability to recognize pathogens ingeneral and attact them (nonspecifice) attact varity of pathogens

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