HISTOLOGY
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Can
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cannot
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Either A or B
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None of the above
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Detailed explanation-1: -Their walls have a greater number of smooth muscles. The diameter range of the muscular arteries varies from 0.1 to 10 mm, this range is smaller than elastic arteries and larger than arterioles diameter.
Detailed explanation-2: -Arteries are always under high pressure. To accommodate this stress, they have an abundance of elastic tissue and less smooth muscle. The presence of elastin in the large blood vessels enables these vessels to increase in size and alter their diameter.
Detailed explanation-3: -The effect of vessel diameter on resistance is inverse: Given the same volume of blood, an increased diameter means there is less blood contacting the vessel wall, thus lower friction and lower resistance, subsequently increasing flow.