A student makes the analogy that the cardiovascular system is like a highway. Why is this a good analogy? a. Blood is made of many different kinds of cells.
b. The heart pumps blood through the veins.
c. The heart is centralized in the body.
d. Blood transports materials to and from different parts of the body.

Which of the following initial observations would more directly lead to this research study? a) ginko biloba is cost effective and also possesses heart-protective, antioxidant, anti-inflammatory properties. b) metformin is an effective treatment of patients with t2d, but shows side effects that complicate the disease state. c) over the past several years, the cost of treating t2d within the united states has increased dramatically. d) many plants contain molecules that improve the health and quality of life of patients with a variety of diseases like t2d. e) t2d affects millions of individuals in the usa and worldwide many of who could benefit from improved therapies.