Question

chapter 14 multiple choice question 21
1 part. | -- of 1 point

the parasympathetic tone ______.

prevents unnecessary heart deceleration
determines normal activity of the urinary tract
causes blood pressure to rise
accelerates activity of the digestive tract

Explanation:

To solve this, we analyze each option based on parasympathetic nervous system (PNS) functions:

• "prevents unnecessary heart deceleration": PNS slows the heart (vagal tone), so this is incorrect.
• "determines normal activity of the urinary tract": PNS promotes urination (contraction of bladder), but “determines normal activity” is less accurate than other options.
• "causes blood pressure to rise": PNS decreases blood pressure (e.g., via vasodilation), so incorrect.
• "accelerates activity of the digestive tract": PNS increases digestive activity (e.g., peristalsis, enzyme secretion), which matches its “rest - and - digest” role.

Answer:

accelerates activity of the digestive tract