The Digestive System — Unit test

Question 11 • Biology - SC3209 IC

What will happen if Richard’s friend jumps in front of him and scares him?

Answer

Richard’s central nervous system will take over, and his peripheral nervous system will have a lesser role.

Richard’s peripheral nervous system will take over, and his central nervous system will have a lesser role.

Richard’s sympathetic nervous system will take over, and his parasympathetic nervous system will have a lesser role.

Richard’s parasympathetic nervous system will take over, and his sympathetic nervous system will have a lesser role.

Explanation

Being suddenly scared activates the sympathetic nervous system, which prepares the body for a fight-or-flight response, such as increasing heart rate and alertness. At that moment, the parasympathetic system—which supports calming and resting—has a lesser role. So the sympathetic nervous system takes over temporarily.

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