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

---

Definitions:

Sudden Movement

An abrupt shift, typically referring to geological events like earthquakes.

Fault

A fracture or zone of fractures in rock along which there has been displacement of the sides relative to one another parallel to the fracture.

Tsunami

A series of ocean waves with extremely long wavelengths and periods, typically caused by underwater earthquakes, volcanic eruptions, or landslides.

Seafloor

The seafloor is the bottom of the ocean, consisting of various geological features including plains, ridges, trenches, and volcanoes, significantly influenced by tectonic movements.