Brandon burns suffered a brain injury that temporarily immobilized half of his body. the paralysis would have affected his entire body if the bullet had severed his the bundle of neurons that allows communication between the brain and the peripheral nervous system.

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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.