Ahematocrit indicates the percentage of the blood volume occupied by red blood cells. how might your hematocrit change if you moved from a town at sea level to a high mountain village where the air contains less oxygen?

a time line cause it goes from 685 to 978

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.