A n P LAB
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Blood Vessel Structure | Arteries=
Elastic, muscular, arterioles
Capillaries=
Blood flows from arterioles to capillaries
Most of exchange between blood and interstitial spaces occurs across the walls
Blood flows from capillaries to venous system
Veins=
Venules, small veins
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| Structure of Veins | Venules and small veins
Tubes of endothelium on delicate basement membrane
Medium and large veins
Valves
Allow blood to flow->heart but not in opposite dir,
Atriovenous anastomoses
Allow blood to flow from art. to small veins w/o passin thru capill.
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| Pulmonary Circulation | Moves blood to and from the lungs
Pulmonary trunk
Arises from right ventricle
Pulmonary arteries
Branches of pulmonary trunk which project to lungs
Pulmonary veins
Exit each lung and enter left atrium
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| Systemic Circulation: Veins | Return blood from body to right atrium
Major veins
Coronary sinus (heart)
Superior vena cava (head, neck, thorax, upper limbs)
Inferior vena cava (abdomen, pelvis, lower limbs)
Types of veins
Superficial, deep, sinuses
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| Blood Pressure | Measure of force exerted by blood against the wall
Blood moves through vessels because of blood pressure
Measured by listening for Korotkoff sounds produced by turbulent flow in arteries as pressure released from blood pressure cuff
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