The Velocity of Blood Flow Is the Lowest in Capillaries

question 33

Multiple Choice

The velocity of blood flow is the lowest in capillaries because

• A) the capillary walls are not thin enough to allow oxygen to exchange with the cells.
• B) the capillaries are far from the heart, and blood flow slows as distance from the heart increases.
• C) the diastolic blood pressure is too low to deliver blood to the capillaries at a high flow rate.
• D) the systemic capillaries are supplied by the left ventricle, which has a lower cardiac output than the right ventricle.
• E) the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system.

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Definitions:

Long-Run Supply Curve

A curve showing the relationship between the price of a good and the quantity supplied over a period long enough for firms to enter or exit the market.

Perfectly Elastic

Refers to a situation in economic theory where a small change in price leads to an infinite quantity demanded or supplied.

Increasing-Cost Industry

An industry in which the cost of production per unit increases as the total output of the industry increases, typically due to resource limitations or regulatory costs.

Consumer Demand

It refers to the desire of consumers to purchase goods and services, combined with their purchasing power, at a given price level and time.