When a Baby Is Born,what Change(s)do NOT Need to Occur

question 36

Multiple Choice

When a baby is born,what change(s) do NOT need to occur in fetal circulation for it to survive?

• A)The oval opening (foramen ovale)must close.
• B)The arterial duct must close.
• C)The umbilical arteries and veins close.
• D)Blood must be able to pass from the right side to the left side.
• E)Fetal blood must be shunted toward the lungs after tying off the umbilical cord.

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Definitions:

Average-Total-Cost

The cost per unit of output, calculated by dividing the total cost (fixed and variable costs) by the total quantity produced.

Marginal-Cost

The expense associated with producing one additional unit of a good or service, critical for decision-making in business and economic policy.

Economies of Scale

The cost advantage achieved by an increase in production, leading to a reduction in expenses per unit due to more efficient use of resources.

Long-Run Average Cost

The per-unit cost of production in the long term, where all inputs are variable.