Charlie has a blood test that shows a normal level of LDLs but an elevated level of HDLs in his blood. Since his family has a history of cardiovascular disease, he wonders if he should modify his lifestyle. What should one advise him to do or not to dow?
What will be an ideal response?
Based just on the information given, Charlie appears to be in good health, at least regarding his diet and assumed regimen of exercise. Problems are often associated with elevated levels of LDLs, which carry cholesterol to peripheral tissues and make it available for the formation of atherosclerotic plaques in blood vessels. On the other hand, high levels of HDLs indicate that a considerable amount of cholesterol is being removed from the peripheral tissues and carried to the liver for disposal. Therefore, one should assure Charlie that he does not need to change his diet or exercise regimen. He appears to be in good health thus far.
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What group of viruses mentioned in the text cause brain inflammation?
What will be an ideal response?
A large decrease in resistance is seen in the blood vessels supplying working skeletal muscle during exercise. What is the implication of this exercise effect?
A. Decreased mean arterial pressure (MAP) during exercise B. Increased mean arterial pressure (MAP) during exercise C. Decreased systolic pressure (SBP) during exercise D. Increased blood flow to working muscles
This chemical structure would be the general representation of ________. 
A. a nucleic acid B. an amino acid C. a fatty acid D. glycerol
Branches off the aortic arch include the
A) brachiocephalic trunk. B) left subclavian artery. C) left common carotid artery. D) left subclavian artery and left common carotid artery. E) brachiocephalic trunk, left subclavian artery, and left common carotid artery.