KNOWLEDGE 4 US 3000

Part --- Three WHAT IS THE APPENDIX? The appendix is useful in cows for digesting grass and koala bears for digesting eucalyptus koalas can have a 4 m (13 ft)-long appendix! In humans, however, the appendix has no useful function and is actually a remnant of our development. It typically measures 5-10 cm (1.9-3.9 in), but if it gets blocked It can get inflamed. If it isn’t quickly removed, the appendix can burst and lead to widespread infection which can be lethal. WHY DOES PEOPLE’S SKIN TURN YELLOW IF THEY CONTRACT LIVER DISEASE? The yellow discoloration of the skin or the whites of the eyes is called jaundice. It is actually due to a buildup of bilirubin within your body, when normally this Is excreted In the urine (hence why urine has a yellow tint). Diseases such as hepatitis and gallstones can lead to a buildup of bilirubin due to altered physiological processes, but there are other causes. Read here-      Part---- one  ...

PART ---TWO WHY DO MEN HAVE NIPPLES? Men and women are built from the same template, and these are just a remnant of a man’s early development . WHAT’S THE POINT OF EYEBROWS? Read here   part-- one                 part-- three Biologically, eyebrows can help to keep sweat and rainwater from falling into your eyes. More importantly in humans, they are key aids to non-verbal communication . WHAT IS A BELLY BUTTON? The umbilicus is where a baby’s blood flows through to get to the placenta to exchange oxygen and nutrients with the mother’s blood. Once out, the umbilical cord is clamped several centimeters away from the baby and left to fall off. No one quite knows why you’ll get an ‘innie’ or an ‘outie’ – it’s probably all just luck. WHY IS IT THAT FINGERNAILS GROW MUCH FASTERTHAN TOENAILS? The longer the bone at the end of a digit the faster the growth rate of the nail. However there are many other influ...

Part--- one How do we think? What are thoughts? This question will keep scientists, doctors and philosophers busy for decades to come. It all depends how you want to define the term ‘thoughts’. Scientists may talk about synapse formation, pattern recognition and cerebral activation in response to a stimulus (seeing an apple and recognizing it). Philosophers, and also many scientists, will argue that a network of neurons cannot possibly explain the many thousands of thoughts and emotions that we must deal with. A sports doctor might state that when you choose to run, you activate a series of well-trodden pathways that lead from your brain to your muscles in less than just a second. There are some specifics we do know though – such as which areas of your brain are responsible for various types of thoughts and decisions. Read here    part---- two                     part---- three Why do we fiddle s...