P Pandora Radio L 4I x IN 16s2 Blou 1250 ME x Digestive system P x 21 shop Forev
ID: 162481 • Letter: P
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P Pandora Radio L 4I x IN 16s2 Blou 1250 ME x Digestive system P x 21 shop Forever 21 for x North Park Universi x C Chegg Stu I Guicle x C www.sapling ning.com 3378108 My Assignment O 3/4/2017 11:55 PM A 0/100 Gradebook Attempts Score Question 10 of 25 Map Sapling Learning Select the statements that accurately describe venous structure. Venous walls are thinner than arterial walls. Veins have a very thick tunica media. Veins have large lumens. Veins have valves, A Previous Check Answer Next Exit HE Search the web and Windows Resources O Assignment Information 2/25/2017 09:3 Available From 3/4/2017 11:55 Due Date: Points Possible: 00 Grade Category: Graded Description Policies LSA2 You can check your answers. You can view solutions after the du You can keep trying to answer each until you get ght or grve up. You lose 5% of the points available answer in your question for each in attempt at that answer. For multiple-choice questions, the p depends on the number of choices O eTextbook O Help With This Topic O Web Help & Videos OTechnical Support and Bug Repol 6:22 PM 3/4/2017Explanation / Answer
Ans. I. Correct. Because arteries have to withstand greater pressure (as the heart pumps blood through them), they have thicker walls than veins.
II. Incorrect. Tunica media is the thickest layer in arteries. For veins, the thickest layer is tunica adventitia.
III. Correct. Veins have wider lumen than arteries.
IV. Correct. Veins have valves.
Arteries (excepts semilunar valve of aortic and pulmonary arteries in heart) don’t have valves.
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