Your Body Constitutes a System of Organized Units Controlling Your

question 44

Multiple Choice

Your body constitutes a system of organized units controlling your internal environment,such as the concentration of Na⁺ in your blood.If this concentration falls below normal,you would have hyponatremia,a condition that can cause headaches,mental confusion,and even seizures.Which event would most likely cause hyponatremia?

• A) Gut cells absorbing too much Na⁺ from food
• B) Kidney cells absorbing too much Na⁺ from urine
• C) Sweating profusely,followed by drinking large quantities of water
• D) Producing increased amounts of urine after drinking several cups of coffee
• E) Kidney cells excreting Na⁺ into the urine

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Definitions:

Short Run

A period of time during which at least one of a firm's inputs is fixed, affecting the firm's capacity to adjust to demand changes.

Short Run

The short run is a period in economics where at least one factor of production is fixed, limiting the adjustments a firm can make to its inputs.

Average Variable Cost

The total variable cost divided by the quantity of output produced; it shows the cost of producing one more unit of output.

Short Run

A period in which at least one input in the production process is fixed, limiting the ability of the firm to adjust production.