The Placenta Allows Exchange of Oxygen,nutrients,and Waste Products Between the Mother

question 9

Multiple Choice

The placenta allows exchange of oxygen,nutrients,and waste products between the mother and fetus by:

• A)Contact between maternal blood and fetal capillaries within the chorionic villi.
• B)Interaction of maternal and fetal pH levels within the endometrial vessels.
• C)A mixture of maternal and fetal blood within the intervillous spaces.
• D)Passive diffusion of maternal carbon dioxide and oxygen into the fetal capillaries.

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Definitions:

Variable Costs

Costs that change in proportion to the level of production or sales. They increase as production increases and decrease as production decreases.

Fixed Costs

Costs that remain constant regardless of the amount of production or business operations.

Contribution Margin

The difference between sales revenue and variable costs of a product or service, indicating the amount contributed towards covering fixed costs and generating profit.

Financial Break-even Point

The level of revenue necessary for a firm to cover all its operating expenses and financial costs, achieving a net income of zero.