Homeostasis?

Question

How does an animal mantain homeostasis? How do they regulate their internal tempurature? And how do they regulate in water stressors? Thank you for all your help.

Answer 1

Homeostasis is basically regulated by the positive or the negative feedback mechanism. The examples that you have raised on regulating internal temperature and water concentration would be considered a negative feedback.

Temperature wise, when the body temperature is too high, the hypothalamus would sense it through the blood flowing through it. This would be translated into a signal to the heat control centre in the hypothalamus. The hypothalamus would then send signals to dilate the blood vessels, activate the sweat gland and reduce unncessary muscle movement. If the temperature is too cold, the heat control centre would send signals to blood vessels to constrict, repress the sweat gland and increase muscle action such as shivering.

In the case of water content, when the body has too little water, the body would signal to produce ADH to signal the kidney to reabsorb more water. Vice versa.