The Human Heart Is Essentially a Pump for Moving Blood

question 48

Multiple Choice

The human heart is essentially a pump for moving blood around the body.If its average power output (over many beats) is about 2.0 W and it pumps blood at an overall average speed of 0.3 m/s into the output aorta channel,calculate the average force with which the heart moves the blood into the aorta.

• A)0.60 N
• B)6.7 N
• C)22 N
• D)66 N
• E)0.18 N

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Definitions:

Inferior Good

A type of good for which demand decreases as the income of the consumer increases, typically because consumers will choose higher quality substitutes when they can afford them.

Demand Curve

A graphical representation of the relationship between the price of a good or service and the quantity demanded for a given period, typically showing a downward slope from left to right.

Elasticity of Demand

A measure of how much the quantity demanded of a good responds to a change in the price of that good, indicating the good's sensitivity to price changes.