How Can the Heart Pump Blood Both Hard Enough to Get

question 62

Short Answer

How can the heart pump blood both hard enough to get all the way around the body, but not so hard that it doesn't blow out the fragile lung tissue?

---

Definitions:

Capitalism

An economic system characterized by private ownership of the means of production and their operation for profit.

Socialism

A political and economic system where the means of production, distribution, and exchange are owned or regulated by the community as a whole.

Total Surplus

An economic measure representing the total benefits to consumers and producers, achieved by the difference between the willingness to pay and the actual price paid, plus the cost savings to producers.

Trade

The exchange of goods, services, or both between two or more parties, either within a country or across international borders.