The liver divides itself into two large sections known as the left and right lobes. At the same time, these lobes divide themselves into eight segments. Each one of the segments has roughly 1,000 small lobes or lobules with small ducts that lead towards the common hepatic duct.
The pancreas is located in the upper left side of the abdomen, behind the stomach. It is a spongy, flat, 6 inches long gland, with a pear-like shape. Around it, there are some other vital organs like the small intestine, the liver, and the spleen.
On average, each hand contains 19 bones. And each fingertip has a fingernail at the end, which are hard keratin structures like the hair that allow us to have an even better hold of objects and perform small and more intricate tasks.
Teeth have several layers with different functions and characteristics. The first one being the enamel, which is the white, external and visible part of the tooth. Underneath, there is a layer of strong tissue called the dentin, where microscopic tubes are located.
Respiration is a larger process involving much of the respiratory system, and breathing is a part of it, by inhaling oxygen and releasing carbon dioxide. At the same time, the body coordinates the external respiration, where gas exchange between the lungs and the bloodstream occurs
