A glaring example of the riches of Africa is the Democratic Republic of Congo, the country of Patrice Lumumba. Economic experts have pronounced that, when developed Congo alone can feed and provide electricity for the whole of Africa. During the Second World War, the Nazi forces of Hitler over-ran Belgium.
Your rib cage goes around your lungs and heart to protect them from damage. Your ribs also move when you breathe in and out. Below your lungs is the diaphragm (say dye-a-fram). This is a big muscle that works with your lungs to get air in (inhale) and out (exhale). You can feel how they work together. 1  Put one hand on your chest and the other on the upper part of your tummy. 2  Now breathe in deeply.
Within the lungs, your bronchi branch into thousands of smaller, thinner tubes called bronchioles. These tubes end in bunches of tiny round air sacs called alveoli (al-VEE-uhl-eye). Each of these air sacs is covered in a mesh of tiny blood vessels called capillaries.our lungs and linked blood vessels deliver oxygen to your body and remove carbon dioxide from your body. Your lungs lie on either side of your breastbone and fill the inside of your chest cavity.