A surgical patient just arrived on the unit from the post-anesthesia care unit.This patient's respirations are 4 per minute and shallow.As the nurse calls for assistance,the patient suddenly feels jittery and breathing quickens.Which of the following feedback loops is operating for the nurse in this situation? A) The central nervous system stimulates hypothalamus-releasing factor,which acts on the anterior pituitary gland to secrete thyroid-stimulating hormone (TSH)and stimulates the release of thyroxine (T₄)and triiodothyronine (T₃). B) The central nervous system directly stimulates the release of insulin,which reduces blood glucose levels. C) The central nervous system directly stimulates the adrenal medulla to secrete epinephrine and stimulates hypothalamus-releasing factor,which acts on the anterior pituitary gland to secrete adrenocorticotropic-stimulating hormone (ACTH),stimulating the release of cortisol. D) The central nervous system stimulates the hypothalamus to synthesize oxytocin and antidiuretic hormone,which are secreted by the posterior pituitary,activating uterine contraction and renal absorption of water.

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Quizplus · Accepted Answer

The central nervous system stimulates the adrenal medulla to secrete epinephrine and stimulates hypothalamus-releasing factor, which acts on the anterior pituitary gland to secrete adrenocorticotropic-stimulating hormone (ACTH), stimulating the release of cortisol. This is the feedback loop of the sympathetic nervous system, which is activated in response to stress or emergency situations, such as the patient's sudden increase in breathing and jitteriness.

A Surgical Patient Just Arrived on the Unit from the Post-Anesthesia