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Patho Ch 15_ Arterial Disorders all Questions & answers solved 100% accurately with Complete Solution Graded A+ latest version
Patho Ch 15_ Arterial Disorders
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Patho Ch 15: Arterial Disorderswhat moves blood away from the heart- ✅arteries
✅muscular walled blood vessels
arteries-
the higher the pressure-✅the greater resistance the heart has to work
against
arteriosclerosis-✅hardening and narrowing of arteries
atherosclerosis-✅plague build up on the artery walls
tunica adventitia-✅connective tissue
tunica media-✅smooth muscle
tunica intima-✅interior lining of artery; endothelial cells
nitric oxide-✅stimulates vessel vasodilation
endothelin-✅stimulates vessel vasoconstriction
VEGF-✅stimulates growth of new blood vessels
thromboxane A2-✅activates clotting
prostacyclin-✅inhibits clotting
von williebrand factor-✅activates clotting
what key event leads to arteriosclerosis and atherosclerosis- ✅endothelial
injury
, ✅
endothelial injury inflammation process- WBC are attracted to the area
and engulf lipids, factors are released to increase platelet aggregation and
adhesion to the endothelium, nitrite oxide increase vasodilation/inhibits
vasoconstriction, plague formation
what is blood flow regulated by-✅pressure and resistance
flow from small diameter to large diameter does what-✅reduces flow and
increases pressure
what is resistance impacted by- ✅vessel diameter/length, blood viscosity
resistance- ✅amount of obstruction to blood flow
laminar flow-✅smooth flow parallel to vessel
which type of blood flow is normal-✅laminar flow
turbulent flow-✅rough flow perpendicular to vessel
bruit-✅whoosing sound
what increases risk for thrombus formation-✅sluggish, stagnant, turbulent
blood flow
Cardiovascular Disease CVD- ✅elevated LDL and Lowered HDL in the
blood stream
LDL-✅destructive
HDL-✅protective
one major cause of atherosclerosis- ✅CVD
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