To Reduce Brain Swelling by Pulling Water Out of Brain

question 9

Multiple Choice

To reduce brain swelling by pulling water out of brain cells, a substance can be injected intravenously to increase the osmotic pressure of interstitial fluid. Which of the following properties can this substance not have in order to be effective?

• A) soluble in water
• B) impermeable to brain plasma membranes
• C) nontoxic to neurons
• D) permeable to capillary endothelium
• E) permeable to brain plasma membranes

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Definitions:

Purely Competitive Firm

An enterprise that operates in a perfectly competitive market, where it is a price taker due to the homogeneity of products and the presence of many buyers and sellers.

Market Price

The market rate at which an asset or service can currently be acquired or disposed of.

Marginal Revenue

The augmented income from the sale of one more unit of a good or service.