Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
During exercise, the parasympathetic nervous system increases the metabolic rate.
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14. The Autonomic Nervous System
Review of the Sympathetic and Parasympathetic Divisions
Multiple Choice
Which of the following effects is correctly associated with the sympathetic and parasympathetic divisions of the autonomic nervous system?
A
The parasympathetic division dilates the bronchioles.
B
The sympathetic division decreases heart rate.
C
The parasympathetic division increases digestive activity.
D
The sympathetic division constricts the pupils.
Verified step by step guidance1
Understand the roles of the sympathetic and parasympathetic divisions of the autonomic nervous system. The sympathetic division is often associated with 'fight or flight' responses, while the parasympathetic division is associated with 'rest and digest' functions.
Analyze the first statement: 'The parasympathetic division dilates the bronchioles.' Typically, the parasympathetic division constricts bronchioles to conserve energy, so this statement is incorrect.
Evaluate the second statement: 'The sympathetic division decreases heart rate.' The sympathetic division usually increases heart rate to prepare the body for action, so this statement is incorrect.
Consider the third statement: 'The parasympathetic division increases digestive activity.' This is correct because the parasympathetic division promotes digestion and other maintenance activities.
Review the fourth statement: 'The sympathetic division constricts the pupils.' The sympathetic division actually dilates the pupils to allow more light in during a 'fight or flight' response, so this statement is incorrect.
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