thoracic cavity lungs

The lungs are situated in the chest cavity, the left and right of the heart. These vital organs take air into the body through which the exchange of oxygen and carbon dioxide as possible. The somewhat triangular lungs rest on the diaphragm (the main breathing muscle that separates the chest cavity from the abdominal cavity) and the outside of the lungs affects the ribs.


Man Gay sapiens or a bipedal primate species in the family Hominidae. Research suggests that modern humans about 200,000 years ago in Africa emerged as a species. Humans have highly developed brains, which he is capable of abstract thinking, language, introspection, problem solving and emotion. Thanks to his intelligence and upright posture, allowing the arms to be free to pick up objects and manipulate, the man much more than other species able to use tools.