An example of a properly functioning homeostatic control system is seen when
A) the core body temperature of a runner rises gradually from 37°C to 45°C.
B) the kidneys excrete salt into the urine when dietary salt levels rise.
C) a blood cell shrinks when placed in a solution of salt and water.
D) blood pressure increases in response to an increase in blood volume.
E) the level of glucose in the blood is abnormally high whether or not a meal has been eaten.

Question

Quizplus · Accepted Answer

The kidneys play a crucial role in maintaining salt balance in the body. When dietary salt levels rise, the kidneys increase the excretion of salt into urine, thus preventing an excessive accumulation of salt in the body. This is an example of a properly functioning homeostatic control system. The other choices describe either malfunctioning or non-homeostatic systems.

An Example of a Properly Functioning Homeostatic Control System Is