A patient has not eaten in 12 hours, and the blood sugar is low. The patient's endocrine system has suppressed the production of insulin. Which form of endocrine communication does this condition represent?
1. Positive feedback
2. Unregulated response
3. Free steroidal influence
4. Negative feedback
4
Rationale 1: Positive feedback is a linear relationship in which the original stimulus is promoted. If this were a positive feedback situation, insulin production would increase.
Rationale 2: The blood sugar-insulin production system is closely regulated.
Rationale 3: Free steroidal influence is not a means of blood sugar control.
Rationale 4: Negative feedback represents a reciprocal relationship between a stimulus and a hormone. In this instance, the low blood sugar influences the body to reduce the amount of insulin produced.
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