Multiple Choice
What would most likely occur if the ovary was inhibited from releasing progesterone?
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10. Cell Signaling
Introduction to Cell Signaling
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Which of the following statements is true regarding parasympathetic tone?
A
Parasympathetic tone increases heart rate and blood pressure during stress.
B
Parasympathetic tone maintains normal activity of the digestive and urinary tracts.
C
Parasympathetic tone is responsible for the fight-or-flight response.
D
Parasympathetic tone inhibits all glandular secretions in the body.
Verified step by step guidance1
Understand the role of the parasympathetic nervous system: The parasympathetic nervous system is part of the autonomic nervous system, which regulates involuntary physiological processes. Its primary function is to promote 'rest-and-digest' activities, such as conserving energy and maintaining normal bodily functions during non-stressful conditions.
Analyze the first statement: 'Parasympathetic tone increases heart rate and blood pressure during stress.' This is incorrect because increasing heart rate and blood pressure during stress is a function of the sympathetic nervous system, not the parasympathetic system.
Evaluate the second statement: 'Parasympathetic tone maintains normal activity of the digestive and urinary tracts.' This is correct because the parasympathetic nervous system supports digestion and urinary function by stimulating processes like peristalsis and bladder contraction during restful states.
Examine the third statement: 'Parasympathetic tone is responsible for the fight-or-flight response.' This is incorrect because the fight-or-flight response is mediated by the sympathetic nervous system, which prepares the body for stressful or emergency situations.
Assess the fourth statement: 'Parasympathetic tone inhibits all glandular secretions in the body.' This is incorrect because the parasympathetic nervous system actually stimulates glandular secretions, such as saliva and digestive enzymes, to support rest-and-digest activities.
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