At the Arterial End of the Tissue Capillaries

question 1

Multiple Choice

At the arterial end of the tissue capillaries,

• A) O2 diffuses from tissue cells into the blood, while CO2 diffuses from the blood into tissue cells.
• B) O2 diffuses from the blood into tissue cells, while CO2 diffuses from tissue cells into the blood.
• C) both O2 and CO2 diffuse from the blood into tissue cells.
• D) both O2 and CO2 diffuse from tissue cells into the blood.
• E) O2 diffuses from the blood into tissue cells, but there is no net movement of CO2.

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Definitions:

Net Operating Income

A measure of a company's profitability excluding interest and tax expenses.

Operating Income

This is the profit realized from a business's operations, calculated by subtracting operating expenses from gross profit.

Total Contribution Margin

The difference between total sales revenue and total variable costs, indicating the amount available to cover fixed expenses and generate profit.

Operating Leverage

A measure of how sensitive net operating income is to a given percentage change in revenue, indicating the proportion of fixed versus variable costs.