BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
CARDIOVASCULAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The hardening of the arteries would likely cause blood flow to remain constant.
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The hardening of the arteries would likely increase blood flow.
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The hardening of the arteries would likely cause blood flow to stop completely.
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The hardening of the arteries would likely restrict blood flow.
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Detailed explanation-1: -When an artery reaches a particular organ, it undergoes a further division into smaller vessels that have more smooth muscle and less elastic tissue. As the diameter of the blood vessels decreases, the velocity of blood flow also diminishes.
Detailed explanation-2: -Nitric oxide is a compound that promotes blood vessel elasticity.
Detailed explanation-3: -The size and elasticity of the artery walls also affect blood pressure. Each time the heart beats (contracts and relaxes), pressure is created inside the arteries. The pressure is greatest when blood is pumped out of the heart into the arteries.
Detailed explanation-4: -Exposure to altered pressure stretch and/or shear stress in both arteries and veins results in activation of inflammation and remodelling of ECM. This results in the development of atherosclerotic lesions in arteries and arterialised veins.