The human lungs are a pair of large, spongy organs optimized for gas exchange between our blood and the air. Our bodies require oxygen in order to survive. The lungs provide us with that vital oxygen while also removing carbon dioxide before it can reach hazardous levels,he heart is a muscular organ about the size of a closed fist that functions as the body%u2019s circulatory pump. It takes in deoxygenated blood through the veins and delivers it to the lungs for oxygenation before pumping it into the various arteries (which provide oxygen and nutrients to body tissues by transporting the blood throughout the body)
Search Can Stock Photo for stock photography, photos, digital illustrations, picture clip art and royalty-free photograph images. Can Stock Photo has the stock image, royalty free photo, stock photograph, graphic or picture that you need. Our photographers provide royalty free stock photos, stock photographs, graphics, and pictures for as little as $2.50. Buy cheap photographs and get immediate image file downloads or subscribe for a low monthly fee. Can Stock Photo also offers EPS vector illustrations, clipart digital artwork, clip art, stock footage, and video animation clips.