18. Which of the following is not an antagonistic relationship? I could also rep

Question

18. Which of the following is not an antagonistic relationship? I could also rephrase my question as follows: Which are agonists? A. Morphine and Heroine. B. Biceps and triceps. C. Calcitonin and PTH (parathyroid hormone) D. Sympathetic and Parasympathetic Nervous System. E. Insulin and Glucagon. 19. Which of the following would not have any effects on the conduction velocity (speed) of an Action potential. A. The temperature of the axon. B. The presence or absence of a Myelin sheath from a Scwann Cell. C. The length of the axon. D. The diameter of the axon. E. None of the above have any significant effects on how fast an action potential travels

Explanation / Answer

18. Among the following options the antagonistic relationship is not shown by MORPHINE and HEROINE.

both of them are obtained ftom Opium.

Option A is correct.

The length of axon does not significantly affect the conduction velocity of an action potential.

As the distance from the stimulus have no impact on it.

Option C is correct

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