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Neurogenesis

Until recently, any doctor would have told you that when you lose brain cells, you can never replace them. Scientists now know that the human brain has the ability to regenerate brain cells, or neurons, a process known as neurogenesis, in at least the hippocampus (used for memory) and olfactory bulb (used for smell). ...

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Neurogenesis
Biology

What's In Your Water?

The United States has strict policies on water treatment systems and sewage drainage, but what about other countries? 'Don't drink the water' is the first thing most people hear when they tell their ... Continue reading

WaterSewage
Science

Subrahmanyan Chandrasekhar

NASA's premier X-ray observatory was named the Chandra X-ray Observatory in honor of the late Indian-American Nobel laureate, Subrahmanyan Chandrasekhar (pronounced: su/bra/mon'/yon chandra/say/kar). ... Continue reading

SubrahmanyanChandrasekhar
Engineering

Making Cars Out of Soup

There was an old TV show set on a spaceship some time in the future which included a machine about the size of a microwave oven. Whenever people wanted something like a meal or a component to repair ... Continue reading

MakingCarsOutofSoup
Engineering

Fiber Optics

The sun is shining; it's a brilliant day. The springboard flexes powerfully under your feet as you launch into a graceful arc through the air and into the crystal clear water below. Arms extended, you ... Continue reading

FiberOptics

The Human Pancreas

HumanPancreasThe pancreas is a body organ that does some heavy lifting. It carries on two important functions relating to digestion and the regulation of blood sugar. The exocrine, the larger function, makes enzymes to help digest food such as proteins and fats. The exocrine portion releases these enzymes into the pancreas duct where it flows into the duodenum and mixes with food after it has left the stomach.

The other function of the pancreas is called endocrine. It consists of scattered cells called islet cells which make hormones such as insulin and glucagon which regulate the body's blood sugar and hold it within a very tight range. If your blood sugar is too low, your brain won't function properly. If it is too high you would have diabetes which leads to damage to various body parts.

The pancreas is about the size of a small oblong loaf of bread. In humans, it is located in the back of the abdomen, behind the stomach and intestines, just above the belly button and against the spine. If affected by disease, the pancreas does not regenerate itself. If you lose more than 90% of your islet cells, you end up with diabetes. If you have chronic pancreatitis, an inflammation of the pancreas, you will have trouble with digestion and have to take enzyme pills. The pancreas works hard to process the food we eat.