What Area of the Brain Is Responsible for Wakefulness and Attention

question 18

Multiple Choice

What area of the brain is responsible for wakefulness and attention?

• A) The corpora quadrigemina
• B) The reticular activating system
• C) The cerebellum
• D) The hypothalamus

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Definitions:

Osmosis

The movement of water molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.

Concentration Gradient

A difference in the concentration of a substance from one point to another, as for example, across a cell membrane.

Plasmolysis

The process in which cells lose water in a hypertonic solution, resulting in the shrinkage of the cell membrane away from the cell wall.

Hypertonic

A solution that has a higher concentration of solutes compared to another solution, leading to potential osmotic movement of water out of a cell.