Why do conditions in the body need to remain constant? give three examples

you need to have control over your blood glucos concentration, body temperature, and water levels to maintain homeostasis.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.