Watch the video "Seeing by Touch Imagine that you're a scientific researcher who's researching brain plasticity and its potential to help blind patients. What three questions would you ask to help guide your research?

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.