Showing posts with label THE HUMAN BODY. Show all posts
Showing posts with label THE HUMAN BODY. Show all posts
WHAT IS INSIDE THE STOMACH?
If you did not have a stomach you could not eat just two or three main
mails each day. You would have to eat lots of tiny ones much more
frequently. The stomach is like a stretchy storage bag for food. It
expands to hold a whole meal. Then the layer of muscle in its walls
contract to make it squeeze, first one way, then the other. Meanwhile
tiny glands in the stomach lining release their digestive chemicals,
including powerful food-corroding acid and strong nutrient-splitting
enzymes. Under this combined physical and chemical attack, after a few
hours the has become a mushy, part-digested soup. Around two to four
hours after arriving in your stomach, The part-digested soup begins to
leave. Small amounts trickle regularly from the stomach into the next
section of the digestive tract the small intestine.
Everything you eat has to be chopped up the broken before the nutrients
or goodness in it can be taken into your blood and used by your body
cell to make energy. This chopping up and breaking down takes place in
your digestive system, or gut. Digestion begins with the first bite. In
your mouth the food is chopped up and chewed by your teeth and mixed
with saliva. Your tongue pushes and kneads the food into the ball. This
ball of food is then pushed down a short tube called the oesophagus to
your stomach. The food leaves to your stomach a little at a time and
goes into your small intestine. This is where most of the digestion
takes place. Undigested food continues on to large intestine, where
water is taken from it, before travelling to the last part of your
intestine, the rectum.
