blood vessels ch 20 t/f – Flashcards
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All types of blood vessels contain a tunica intima.
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TRUE
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All arteries carry oxygen-rich blood, whereas veins carry oxygen-poor blood.
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FALSE
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Systemic blood pressure is regulated by adjusting the diameter of arterioles.
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TRUE
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In metabolically active tissues, blood is present in metarterioles, and precapillary sphincters are constricted.
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FALSE
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Postcapillary venules function much like true capillaries.
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TRUE
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The pulse of the posterior tibial artery is palpated behind the knee.
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FALSE
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Veins have less elastin in their walls than do arteries.
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TRUE
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Arterioles and venules have a vasa vasorum to provide nutrients to their outer walls, whereas the inner walls receive nutrients from blood in the lumen.
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FALSE
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The middle and posterior cerebral arteries are connected by the posterior communicating arteries
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TRUE
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The internal iliac arteries supply blood both to the pelvic organs and to the lower limbs
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TRUE
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The inferior vena cava ascends on the left side of the vertebral bodies and to the left of the abdominal aorta.
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FALSE
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Muscular arteries regulate blood flow to organs and groups of organs.
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TRUE
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The elastic arteries are the largest arteries near the heart.
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TRUE
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The saphenous vein is not paired with an artery with the same name.
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TRUE
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Paired fetal umbilical veins carry blood from the fetus to the placenta, whereas the unpaired umbilical artery returns blood from the placenta to the fetus.
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FALSE
