Which of the following cells does not undergo mitosis?
red blood cells ,
smooth muscle cells ,
skin cells ,
white blood cells ,
none of the cells listed undergoes mitosis

answer; /// i believe the correct answer is (reactants);

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.