STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
ANIMAL TISSUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cardiac
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smooth
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skeletal
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None of the above
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Detailed explanation-1: -The smooth muscle cell directly drives the contraction of the vascular wall and hence regulates the size of the blood vessel lumen.
Detailed explanation-2: -The walls of these organs are composed of smooth muscle, a type of tissue that enables constriction or dilatation. Smooth muscle is so called because of the lack of the appearance of striations (stripes) as seen in both skeletal and cardiac muscles.
Detailed explanation-3: -Blood vessels contain only smooth muscle cells. These muscle cells reside within the tunica media along with elastic fibers and connective tissue.
Detailed explanation-4: -’ That is: vascular smooth muscle contracts, blood vessels become narrower and less blood flows through them. This process is called ‘vasoconstriction. ‘ Our bodies are constantly fine-tuning this balance of vasodilation and vasoconstriction to meet the energy demands of different organs and tissues.