Questions: How can opposite effects be produced in the ANS?
Sometimes by innervation by only one division
Only by dual innervation
Transcript text: How can opposite effects be produced in the ANS?
Sometimes by innervation by only one division
Only by dual innervation
Solution
The answer is the first one: Sometimes by innervation by only one division.
Explanation for each option:
Sometimes by innervation by only one division: This is correct because the autonomic nervous system (ANS) can produce opposite effects through different mechanisms, including the release of different neurotransmitters or the activation of different receptors within the same division.
Only by dual innervation: This is incorrect because while dual innervation (where both the sympathetic and parasympathetic divisions innervate the same organ) can produce opposite effects, it is not the only way. Single division innervation can also produce opposite effects through different pathways or receptor types.
Summary:
Opposite effects in the autonomic nervous system can be produced sometimes by innervation by only one division, not exclusively by dual innervation.