To summarize, food intake is influenced by metabolic activity in hypothalamic neurons and elsewhere; by hormones that signal the body's fat content to the brain; and by other homeostatic-need situations such as low blood glucose. All of these represent instances of negative feedback.
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Voice volume is the right answer i think
Your tone of voice should be friendly, professional, and sincere to keep a patient engaged. Improving your tone can be as simple as smiling, taking a deep breath, and approaching with a genuine desire to help.
