How do you define homeostasis?

1) actively changing due to an environmental stimulus.

2) taking “raw” materials in turning it into a usable energy.

3) the ability to increase in a size complexity.

4) regulation of bodily functions to stay within a certain range.

Homeostasis is the regulation of bodily functions to stay within a certain range.

the correct answer is (

explanation:

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.