Neurophysiology

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0 [{"id":324885,"quiz_id":"16561","answer_id":null,"answerType_id":"0","created_at":"2017-11-23 18:15:53","updated_at":"2017-11-23 18:15:53","questionName":"Which of the following responses is mediated by parasympathetic muscarinic receptors?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"Erection is a parasympathetic muscarinic response. Dilation of the bronchioles, ejaculation, constriction of the gastrointestinal (GI) sphincters, and increased cardiac contractility are all sympathetic \u03b1 or \u03b2 responses.","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":324883,"quiz_id":"16561","answer_id":null,"answerType_id":"0","created_at":"2017-11-23 18:10:03","updated_at":"2017-11-23 18:10:51","questionName":"Which autonomic receptor is blocked by hexamethonium at the ganglia, but not at the neuromuscular junction?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":0,"explanation":"Hexamethonium is a nicotinic blocker, but it acts only at ganglionic (not neuromuscular junction) nicotinic receptors. This pharmacologic distinction emphasizes that nicotinic receptors at these two locations, although similar, are not identical.","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":324886,"quiz_id":"16561","answer_id":null,"answerType_id":"0","created_at":"2017-11-23 18:16:58","updated_at":"2017-11-23 18:16:58","questionName":"Which of the following is a property of C fibers?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"C fibers (slow pain) are the smallest nerve fibers and therefore have the slowest conduction velocity.","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":324887,"quiz_id":"16561","answer_id":null,"answerType_id":"0","created_at":"2017-11-23 18:18:30","updated_at":"2017-11-23 18:18:30","questionName":"When compared with the cones of the retina, the rods:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"Of the two types of photoreceptors, the rods are more sensitive to low-intensity light and therefore are more important than the cones for night vision. They adapt to darkness after the cones. Rods are not present in the fovea. The cones are primarily inv","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":324884,"quiz_id":"16561","answer_id":null,"answerType_id":"0","created_at":"2017-11-23 18:14:36","updated_at":"2017-11-23 18:14:36","questionName":"A 66-year-old man with chronic hypertension is treated with prazosin by his physician. The treatment successfully decreases his blood pressure to within the normal range. What is the mechanism of the drug\u2019s action?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"Prazosin is a specific antagonist of \u03b11 receptors, which are present in vascular smooth muscle, but not in the heart. Inhibition of \u03b11 receptors results in vasodilation of the cutaneous and splanchnic vascular beds, decreased total peripheral resistance, ","question_score_id":null,"lang":null,"questionAudioPath":null}]
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Which of the following responses is mediated by parasympathetic muscarinic receptors?

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