During Exercise, Cardiac Output Increases Dramatically, but Mean Arterial Blood

question 63

Multiple Choice

During exercise, cardiac output increases dramatically, but mean arterial blood pressure rises very little. Why is this so?

• A) Venules constrict, increasing vascular resistance.
• B) Arterioles dilate, decreasing vascular capacity.
• C) Arterioles constrict, increasing vascular resistance.
• D) Muscle vessels dilate, increasing vascular capacity.

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Definitions:

Total Cost-Plus

A pricing strategy where the selling price of a product is determined by adding a profit margin to the total cost of manufacturing or producing the product.

Mark-Up Percentage

A measure of how much the cost of a product is increased to arrive at its selling price, typically to cover overheads and profit.

Mark-Up Percentage

The percentage added to the cost price of products to determine the selling price, intended to cover overhead and profit.

Total Variable Cost

The sum of all variable costs that change in proportion with the level of output or activity.