Concept explainers
To determine:
The statement not accurately describing veins
(a) Have less elastic tissue and smooth muscle than arteries,
(b) contain more fibrous tissue than arteries,
(c) most veins in the extremities have valves,
(d) always carry deoxygenated blood.
Answer to Problem 1MC
Solution:
(d) Always carry deoxygenated blood: The veins generally carry deoxygenated blood, but the pulmonary vein is an exception as it carries the oxygenated blood to the heart from the lungs.
Explanation of Solution
The veins are the blood vessels that are responsible for carrying the blood from all the body parts to the heart. They generally carry the deoxygenated blood to the heart from the different body parts, but the pulmonary vein is an exception as it carries the oxygenated blood to the heart from the lungs.
The elastic tissues and the smooth muscles in the veins are less in number as compared to the arteries. Arteries generally carry the oxygenated blood. Veins contain more fibrous tissues and have valves.
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