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phys q - criss
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04-28-2005, 09:51 AM
Which of the following types of blood vessel is likely to have the highest ratio of wall cross-sectional area to lumen cross-sectional area?
A. Aorta and large arteries B. Small arteries C. Arterioles D. Capillaries E. Venules and small veins F. Vena cavae
04-28-2005, 10:00 AM
Answer: C, it has too the large decrease in blood pressure
04-28-2005, 10:00 AM
is it C???.................resistant vessels...arterioles??
04-28-2005, 10:11 AM
shri, capillaries have the largest luminal cross-sectional area but their wall cross sectional area is so small cos they lack muscle, so the ratio of wall cross-sectional area to lumen cross- sectional area would be so small.this is my understanding.
04-28-2005, 10:12 AM
answer given as arterioles..........why not small arteries??????????????? arteries have thick muscular wall than arterioles no?
04-28-2005, 02:24 PM
victor ,capillars has the highest cross sectional area-100% true
04-28-2005, 02:36 PM
the aorta has the lowest cross sectional area,but when asked about ratio the arteries has the highest ratio of cross section to lumen
capillaries has the smallest luminal area,but cross sectional area highest |
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