Macrophages do not circulate in the blood but reside in tissues. In the blood, they circulate as monocytes, which will become activated Macrophages once they reach the tissues. Thank you for the question.
What is the cause that lets LDL cholesterol into intima of blood vessels and arteries? Also if it occurs only when LDL cholesterol is high, why doesn't it happen when the level is optimal. Thank you!
The process begins with damage to the wall of the blood vessel. Optimal levels of LDL are meant to decrease risk of atherosclerosis, but it is not an absolute guarantee that atherosclerosis will not happen. It simply decreases the risk.
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Why does the macrophage wait to eat the oxidized cholesterol after it gets into the artery rather than while floating in blood?
Macrophages do not circulate in the blood but reside in tissues. In the blood, they circulate as monocytes, which will become activated Macrophages once they reach the tissues. Thank you for the question.
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I just love it
What is the cause that lets LDL cholesterol into intima of blood vessels and arteries? Also if it occurs only when LDL cholesterol is high, why doesn't it happen when the level is optimal.
Thank you!
The process begins with damage to the wall of the blood vessel. Optimal levels of LDL are meant to decrease risk of atherosclerosis, but it is not an absolute guarantee that atherosclerosis will not happen. It simply decreases the risk.
@@livephysiology Thank you!
It seems like insulin resistance and high sugar levels can damage that layer, causing the whole chain of reactions.
@@livephysiology and what causes the damage to the blood vessel wall?
@@khairulshiddiq9728 Chronic hypertension allegedly damages endothelial lining.