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Cards In This Set
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WHAT DO THE BLOOD VESSELS AND 4 HEART CHAMBERS DO
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FORM A CLOSED SYSTEM IN WHICH BLOOD IS CARRIED TO AND FROM THE TISSUES
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WHOLE BLOOD DOESN'T LEAVE THE VESSELS, BUT COMPONENTS OF THE PLASMA AND TISSUE FLUIDS CAN BE EXCHANGED THROUGH THE WALLS OF WHAT
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THE TINIEST VESSELS (CAPILLARIES) SEMIPERMEABLE MEMBRANES
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NAME THE 5 GROUPS OF BLOOD VESSELS(NAMED ACCORDING TO THE SEQUENCE OF BLOOD FLOW FROM THE HEART
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ARTERIES:CARRY BLOOD AWAY FROM HEART TO TISSUE. ATERIES RECEIVE BLOOD FROM VENTRICLES. -ARTERIOLES:SMALL DIVISIONS OF ARTERIES THAT CARRY BLOOD INTO CAPILLARIES-CAPILLARIES:TINY, THIN WALLED VESSELS THAT ALLOW FOR EXCHANGES B/T SYSTEMS, CAPILLARIES CONNECT ARTERIOLES AND VENULES-VENULES:SMALL VESSELS THAT RECEIVE BLOOD FROM CAPILLARIES AND BEGIN TRANSPORT BACK TO THE HEART(BLOOD IS DEOXYGENATED IN VENULES)-VEINS:VESSELS FORMED BY MERGER OF VENULES THAT CONTINUE TRANSPORT OF BLOOD BACK TO THE HEART
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BLOOD CIRCUITS ARE DIVIDED INTO 2 GROUPS
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PULMONARY CIRCUIT-DELIVERS BLOOD TO THE LUNGS WHERE CO2 IS ELIMINATED AND O2 IS REPLENISHED
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PULMONARY ARTERY AND ITS BRANCHES
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CARRY BLOOD FROM THE RIGHT VENTRICLE TO THE LUNGS
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CAPPILARIES IN THE LUNGS
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GAS EXCHANGE
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PULMONARY VEINS
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CARRY BLOOD BACK TO THE lT ATRIUM
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PULMONARY ARTERIES CARRY BLOOD LOW IN O2
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PULMONARY VEINS CARRY BLOOD HIGH IN OXYGEN THIS IS OPPOSITE FROM ALL OTHER ARTERIES AND VEINS
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SYSTEMIC CIRCUIT
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SERVES THE REST OF THE BODY. SUPPLIES NUTRIENTS AND O2 AND CARRIES AWAY WASTE MATERIALS
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AORTA
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RECEIVES BLOOD FROM THE Lt VENTRICLE AND BRANCHES INTO SYSTEMIC ARTERIES TO CARRY BLOOD TO TISSUES
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SYSTEMIC VEINS
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CARRY BLOOD BACK TO THE HEART FROM THE Rt ATRIUM-SUPERIORAND INFERIOR VENA CAVA
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3 TUNICS (COATS) OF THE ARTERY
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ENDOTHELIUM-INNERMOST MEMBRANE, FORMS A SMOOTH SURFACE OVER WHICH BLOOD FLOWS EASILY. MIDDLE, THICKEST LAYEROF SMOOTH MUSCLE(INVOLUNTARY),UNDER CONTROL OF ANS. OUTER LAYER OF CONNECTIVE TISSUE
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ELASTIC TISSUE
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BETWEEN THE LAYERS ALLOWS VESSELS TO STRETCH WHEN THE VESSEL RECEIVES BLOOD THEN IT RETURNS TO ITS ORIGINAL SIZE
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ARTERIOLES
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LESS ELASTIC AND CONTROLLED BY THE ANS
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VESSELS CONSTRICT WHEN THE MUSCLES CONTRACT AND DILATEWHEN THE MUSCLES RELAX.
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THE ARTERIOLES REGULATE THE AMOUNT OF BLOOD THAT ENTERS VARIOS TISSUES AT A GIVEN TIME
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