Term
| THREE TYPES OF BLOOD VESSELS |
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Definition
| ARTERIES CAPILLARIES AND VEINS |
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Term
| LAYERS IN TYPICAL BLOOD VESSEL |
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Definition
INSIDE TO OUTSIDE
TUNICA INTIMA
-ENDOTHELIUM
-SUBENDOTHELIAL LAYER
- INTERNAL ELASTIC LAMINA
TUNICA MEDIA
-EXTERNAL ELASTIC LAMINA
TUNICA EXTERNA |
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Term
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Definition
ELASTIC ARTERY (AORTA AND FIRST MASSIVE BRANCHES)
MUSCULAR ARTERY MOST ARTERIES, LARGE WALL SUPPORT
CAPILLARY
VEIN THIN WALLS (LESS PRESSURE THAN ARTERIES) |
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Term
| VESSEL AND SPECIAL FEATURE LAYERS |
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Definition
ELASTIC TUNICA INTIMA, THICK LAYER OF TUNICA MEDIA, MANY ELASTIC SHEETS, AND HAS TUNICA EXTERNA
CAPILLARY. ONLY HAS A TUNICA INTIMA LAYER
VEIN. TUNICA INTIMA FORMS VALVES, THINK TUNICA MEDIA, TUNICA EXTERNA IS THE THICKEST LAYER FOR SUPPORT
MUSCULAR ARTER HAS TUNICA INTIMA, LITTLE OR NO ELASTIN, BUT TUNICA MEDIA IS THICKEST LAYER, HAS TUNICA EXTERNA |
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Term
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Definition
| INSIDE LINED BY EPITHELIUM, TUNICA MEDIA IS A SMOOTH MUSCLE AND DETERMINES WHERE BLOOD GOES. |
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Term
| ATHEROSCLEROSIS WHERE IT AFFECTS |
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Definition
| IT AFFECTS THE TUNICA INTIMA, PLAQUE OBSTRUCTS |
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Term
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Definition
| WEAKENESS IN THE WALL OF A VESSEL, BALLOONS OUT AND GETS WEAK. RUPTURE ELEADS TO SIGNIFICANT BLOOD LOSS. SO PUT IN GRAFT/STENT TO PREVENT RUPTURE BY DECREASING PRESSURE ON WALL OF VESSEL. |
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Term
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Definition
RELY ON POSITION BETWEEN MUSCLES, SO THEY CONTRACT AND COMPRESS VEINS
VALVES TRAP SO NO BACKWARDS BLOOD FLOW.
RETURN TO HEART. |
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Term
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Definition
| ARE ENLARGED VEINS WHEN VALVES FAIL AND BLOOD POOLS IN VEINS, PAINFUL |
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Term
| THREE TYPES OF CAPILLARIES |
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Definition
CONTINUOUS
FENESTERATED
SINUSOIDAL/DISCONTINUOUS |
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Term
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Definition
| ATTACHED TIGHTLY BY JUNCTIONS, NO HOLES, FOR TIGHT CONTROLLED EXCHANGE CNS MUSCLE TISSUE |
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Term
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Definition
INTERMEDIAL XCHANGE
HOLES IN ENDOTHELIAL WHERE FREER EXHCANGE IS POSSIBLE IF NECESSARY.
ENDOCRINE GLANDS
AND THE KIDNEY |
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Term
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Definition
LEAKIEST
RBC'S
SPLEEN
LIVER |
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Term
| CONTROL OF CIRCULATION VIA CAPILLARY BED TO LOCATIONS THAT NEED THE MOST O2 |
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Definition
SPHINCTERS OPEN, BLOOD FLOWS THROUGH CAPILLARIES
SPHINCTERS CLOSED, BLOOD FLOWS THROUGH THOROUGHFARE CHANNEL. (BIPASSES CAP BED) |
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Term
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Definition
ARTERY, CAP BED, VEIN, CAP BED, VEIN DELIVERS BLOOD TO TISSUES AROUND THIS SPECIFIC LOCATION.
ONLY OCCURS IN PITUITARY PORTAL SYSTEM AND HEPATIC PORTAL SYSTEM |
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Term
| THE PITUITARY USES A PORTAL SYSTEM |
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Definition
| TO AFFECT A SYSTEM VIA BLOODSTREAM |
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Term
| THE HEPATIC PORTAL SYSTEM |
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Definition
| PURPOSE IS TO DETOX BLOOD SO DOESN'T DESTROY SURROUNDING TISSUE |
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Term
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Definition
alternative ways to deliver blood to diff regions of body
if 1 vessel is blocked blood can still get to the region by an alternative route
not all regions of body have this, but most do. |
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Term
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Definition
| pressure blood exerts against arterial wall |
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Term
| which vessel is commonly used to measure blood pressure |
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Definition
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Term
| systolic and diastolic pressure |
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Definition
systolic is first bp number, blood comes through
diastolic pressure is no turbulence in flow, nice and slow. -120/80 is typical. 140/85 is high BP risk for altherosclerosis |
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Term
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Definition
elevated high BP
silent killer.
treated with a variety of medications |
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