fluid flow through a vessel depends on what? ~CORRECT
ANSWER~✓✓-The pressure difference between ends of the vessel.
Pressure pushes the fluid through.
Pressure keeps the vessel from collapsing.
-The vessel's resistance to fluid flow:
Small vessels have more resistance.
Longer vessels have more resistance.
More viscous fluids have greater resistance.
blood flow through a vessel depends on what? ~CORRECT
ANSWER~✓✓-Heart creating pressure difference between ends of the
vessel
Heart pushing the blood through
Blood pressure keeping the vessels open
-The vessel's resistance to fluid flow:
Constricting arterioles increasing resistance
Increased hematocrit increasing resistance
,varicose veins (etiology and risk factors) ~CORRECT
ANSWER~✓✓Dilated, tortuous veins
Etiology:
Blood has pooled in the veins
Can be caused from damage to valves or action of gravity
Vein is engorged with blood
Over time, distention develops
Risk factors...
Prolonged standing
Intraabdominal pressure
Blood flow through the heart ~CORRECT ANSWER~✓✓superior vena
cava --> Rt atria --> Tricuspid valve --> Rt ventricle --> Pulmonic valve -
-> Lungs --> Lt atria --> Mitral valve --> Lt ventricle --> aortic valve -->
aorta --> Body
chronic venous insufficiency ~CORRECT ANSWER~✓✓Inadequate
venous return over a long period of time
Due to varicose veins or valvular incompetence
,Results in venous hypertension, circulatory stasis and hypoxia
clinical manifestations of chronic venous insufficiency ~CORRECT
ANSWER~✓✓Impaired venous blood flow will lead to...
Tissue congestion
Edema
Brown pigmentation of the skin (hemosiderin)
Caused by hemosiderin deposits from a breakdown of RBC's
May lead to venous stasis ulcers (weepy ulcers)
Due to stasis dermatitis and impaired tissue nutrition
What is the pacemaker of the heart? ~CORRECT ANSWER~✓✓SA
node
cardiac conduction pathway ~CORRECT ANSWER~✓✓SA Node -
Internodal Pathways - AV Node - Bundle of His - Bundle Branches -
Purkinje Fibers
types of venous thrombosis ~CORRECT ANSWER~✓✓-Thrombus:
Blood clot attached to the vessel wall
Venous blood clots are move common than arterial (Less pressure in the
venous system)
, Deep vein thrombosis (DVT) most common in legs
-Thrombophlebitis:
Thrombo = Blood clot
Phlebitis = Vessel inflammation
-Thromboembolus:
Traveling blood clot
risk factors for DVT ~CORRECT ANSWER~✓✓Called the "Triad of
Virchow" -->
Venous stasis
Venous wall injury
Hypercoagulability
Superior vena cava syndrome ~CORRECT ANSWER~✓✓Progressive
occlusion of the superior vena cava that leads to venous distention of
upper extremities and head
Causes include:
Bronchogenic cancers (75% of cases)
Lymphomas and other cancers
ANSWER~✓✓-The pressure difference between ends of the vessel.
Pressure pushes the fluid through.
Pressure keeps the vessel from collapsing.
-The vessel's resistance to fluid flow:
Small vessels have more resistance.
Longer vessels have more resistance.
More viscous fluids have greater resistance.
blood flow through a vessel depends on what? ~CORRECT
ANSWER~✓✓-Heart creating pressure difference between ends of the
vessel
Heart pushing the blood through
Blood pressure keeping the vessels open
-The vessel's resistance to fluid flow:
Constricting arterioles increasing resistance
Increased hematocrit increasing resistance
,varicose veins (etiology and risk factors) ~CORRECT
ANSWER~✓✓Dilated, tortuous veins
Etiology:
Blood has pooled in the veins
Can be caused from damage to valves or action of gravity
Vein is engorged with blood
Over time, distention develops
Risk factors...
Prolonged standing
Intraabdominal pressure
Blood flow through the heart ~CORRECT ANSWER~✓✓superior vena
cava --> Rt atria --> Tricuspid valve --> Rt ventricle --> Pulmonic valve -
-> Lungs --> Lt atria --> Mitral valve --> Lt ventricle --> aortic valve -->
aorta --> Body
chronic venous insufficiency ~CORRECT ANSWER~✓✓Inadequate
venous return over a long period of time
Due to varicose veins or valvular incompetence
,Results in venous hypertension, circulatory stasis and hypoxia
clinical manifestations of chronic venous insufficiency ~CORRECT
ANSWER~✓✓Impaired venous blood flow will lead to...
Tissue congestion
Edema
Brown pigmentation of the skin (hemosiderin)
Caused by hemosiderin deposits from a breakdown of RBC's
May lead to venous stasis ulcers (weepy ulcers)
Due to stasis dermatitis and impaired tissue nutrition
What is the pacemaker of the heart? ~CORRECT ANSWER~✓✓SA
node
cardiac conduction pathway ~CORRECT ANSWER~✓✓SA Node -
Internodal Pathways - AV Node - Bundle of His - Bundle Branches -
Purkinje Fibers
types of venous thrombosis ~CORRECT ANSWER~✓✓-Thrombus:
Blood clot attached to the vessel wall
Venous blood clots are move common than arterial (Less pressure in the
venous system)
, Deep vein thrombosis (DVT) most common in legs
-Thrombophlebitis:
Thrombo = Blood clot
Phlebitis = Vessel inflammation
-Thromboembolus:
Traveling blood clot
risk factors for DVT ~CORRECT ANSWER~✓✓Called the "Triad of
Virchow" -->
Venous stasis
Venous wall injury
Hypercoagulability
Superior vena cava syndrome ~CORRECT ANSWER~✓✓Progressive
occlusion of the superior vena cava that leads to venous distention of
upper extremities and head
Causes include:
Bronchogenic cancers (75% of cases)
Lymphomas and other cancers
