Autonomic hyperreflexia-induced bradycardia is a result of stimulation of what?
A)Sympathetic nervous system to b-adrenergic receptors to the sinoatrial node
B)Carotid sinus to the vagus nerve to the sinoatrial node
C)Parasympathetic nervous system to the glossopharyngeal nerve to the atrioventricular node
D)Bundle branches to the a-adrenergic receptors to the sinoatrial node

Question

Quizplus · Accepted Answer

The intact autonomic nervous system reflexively responds with an arteriolar spasm that increases blood pressure. Baroreceptors in the cerebral vessels, the carotid sinus, and the aorta sense the hypertension and stimulate the parasympathetic system. The heart rate decreases, but the visceral and peripheral vessels do not dilate because efferent impulses cannot pass through the cord. The sympathetic system is damaged and not able to stimulate receptors. Without sympathetic balance, the parasympathetic nervous system dominates. The glossopharyngeal nerve is not involved in heart rate regulation. a-Adrenergic receptors would be stimulated by the sympathetic system.

Autonomic Hyperreflexia-Induced Bradycardia Is a Result of Stimulation of What