After Discovering That the Shadows Outside His Window Were Only

question 6

Multiple Choice

After discovering that the shadows outside his window were only the trees in the yard, Ralph's blood pressure decreased and his heartbeat slowed. These physical reactions were most directly regulated by his

• A) parasympathetic nervous system.
• B) sympathetic nervous system.
• C) somatic nervous system.
• D) hippocampus.

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Definitions:

Electrolytes

Substances that produce an electrically conducting solution when dissolved in a polar solvent, like water, essential for bodily functions.

Electrolytes

Substances that dissociate into ions in solution and acquire the capacity to conduct electricity.

Electrolytes

Substances that produce ions and conduct electricity when dissolved in water.

Not Electrolytes

Substances that do not dissociate into ions in solution and therefore cannot conduct electricity in their molten or aqueous states.