Just before a class presentation, you have butterflies in your stomach and are beginning to blush. Which is TRUE about this response? A the limbic system may be playing a role. B these are autonomic...

Just before a class presentation, you have butterflies in your stomach and are beginning to blush. Which is TRUE about this response? A the limbic system may be playing a role. B these are autonomic reflexes. C these are polysynaptic reflexes. D emotion is being transformed into visceral function. E All of the above Stretching a muscle spindle causes A reflex inhibition of that muscle. B stretching of the tendon. ? reflex contraction of that muscle. If a drug inhibits acetylcholinesterase activity in the neuromuscular junction, what effect does the drug have on the membrane potential of the muscle fiber? A It would remain depolarized. B It would repolarize more quickly than normal. C It would hyperpolarize. D It would not effect membrane potential.