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.
Mammalian lungs are located in the thoracic cavity where they are surrounded and protected by the rib cage, intercostal muscles, and bound by the chest wall. The bottom of the lungs is contained by the diaphragm, a skeletal muscle that facilitates breathing.Breathing requires the coordination of the lungs, the chest wall, and most importantly, the diaphragm.o increase the volume of the lungs, the chest wall expands. This results from the contraction of the intercostal muscles, the muscles that are connected to the rib cage. Lung volume expands because the diaphragm contracts and the intercostals muscles contract, thus expanding the thoracic cavity.