The lungs are light pink in color and consist of spongy tissue. They are in the chest cavity, which they almost completely. Due to the presence of the heart, there is less space for the left lung, which is therefore smaller and lighter than the right lung. The right lung is via grooves or fissures divided into three lung lobes. The left lung is separated by a fissure and consists of two lung lobes.

The larynx is located in the front of the highest part of the neck and passes into the trachea. When food intake is the larynx closed.

The trachea is a tube reinforced by cartilage in the middle of the neck and the chest cavity, the air inhaled into the lungs carries.

The inhaled air through the bronchi, the two main branches of the windpipe to the lungs. The bronchi divide into numerous fine branches ending in the alveoli.


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.