Question

Which of the answer choices is an example of negative feedback altering homeostatic control? a. The concentration of salt in a person's urine increases after that person eats a large bag of salty chips. b. A person with a bacterial infection runs a fever and his body temperatures rises and stays elevated for several days. c. The production of oxytocin (a hormone) increases in a pregnant woman's body as oxytocin levels in her body rise. d. A person's heart rate remains elevated over the course of a long run.

Answer 1

Answer:a. The concentration of salt in a person's urine increases after that person eats a large bag of salty chips.

Explanation:

Homeostasis is the quality of the body to maintain the normal state of the body with respect to changes occurring in the external environment.

The homeostasis is maintained by involving the negative feedback loops. These loops function in opposite to the stimulus, that triggers them. For example, if the body temperature is high, the negative feedback loop will function to bring the body temperature down towards the set point, or the target value.

The homeostasis can regulate the ion concentration. When the body acquires salt by eating chips, the urge to expel salt through urine also increases. Hence, the ionic concentration of salt is maintained through negative feedback loops altering homeostasis.