1) Explain the difference in the functions of low-densitylipoproteins and high-density lipoproteins and explain why one iscalled “good†cholesterol and the other is called “badâ€cholesterol.
2) Define vasoconstriction and vasodilation.What is the mechanism of regulation?
3) The heart is called a \"double pump\" because there are twofunctionally separate circulations. Trace the pathway of each ofthese circulations and include the following information: heartchambers involved, major blood vessels involved, and general areasthrough which the blood flows. Begin with the right atrium.
