The core body temperature of a runner rises gradually from 37°C to 45°C.
The kidneys excrete salt into the urine when dietary salt levels rise.
A blood cell shrinks when placed in a solution of salt and water.
The blood pressure increases in response to an increase in blood volume.
An increase in blood sugar increases the secretion of a hormone that stores sugar as glycogen.
A decrease in blood sugar increases the secretion of a hormone that converts glycogen to glucose.
A nursing infant's sucking increases the secretion of a milk-releasing hormone in the mother.
An increase in calcium concentration increases the secretion of a hormone that stores calcium in bone.
Increases its evaporative heat loss.
Decreases its metabolic heat production.
Increases its body temperature to match the environmental temperature.
Increases its vasodilation in blood vessels near the skin.
Growth of hair
Reduced metabolic rate
A change in thermostat "set-point"