The human digestive system breaks down food through both mechanical and chemical digestion. Mechanical digestion begins in the mouth through chewing, while chemical digestion involves enzymes in saliva, gastric juice, and the pancreas. Food moves through the esophagus to the stomach and then into the small intestine, where most digestion occurs. Remaining waste moves into the large intestine to be excreted. Maintaining a healthy digestive system is important for nutrient absorption and preventing issues like acid reflux or constipation.

1. HUMAN
DIGESTIVE
SYSTEM

2. DIGESTIVE SYSTEM

3. DIGESTION
Digestion is the breakdown of large insoluble food molecules into
small water-soluble food molecules so that they can be absorbed
into the watery blood plasma. In certain organisms, these smaller
substances are absorbed through the small intestine into the
blood stream. Digestion is a form of catabolism that is often
divided into two processes based on how food is broken down:
mechanical and chemical digestion. The term mechanical
digestion refers to the physical breakdown of large pieces of food
into smaller pieces which can subsequently be accessed by
digestive enzymes. In chemical digestion, enzymes break down
food into the small molecules the body can use.

4. In the human digestive system , process of digestion has many
stages, the first of which starts in the mouth (oral cavity). Digestion
involves the breakdown of food into smaller and smaller components
which can be absorbed and assimilated into the body. The secretion
of saliva helps to produce a bolus which can be swallowed pass down
the oesophagus and into the stomach.
Saliva also contains a catalytic enzyme called amylase which starts to
act on food in the mouth. Another digestive enzyme called lingual
lipase is secreted by some of the lingual papillae to enter the saliva.
Digestion is helped by the mastication of food by the teeth and also by
the muscular contractions of peristalsis. Gastric juice in the stomach is
essential for the continuation of digestion as is the production
of mucus in the stomach .
DIGESTIVE SYSTEM

5. Peristalsis is the rhythmic contraction of muscles that begins in the
oesophagus and continues along the wall of the stomach and the rest of the
gastrointestinal tract. This initially results in the production of chye which
when fully broken down in the small intestine is absorbed as chyle into the
lymphatic system. Most of the digestion of food takes place in the small
intestine. Water and some minerals are reabsorbed back into the blood, in
the colon of the large intestine. The waste products of digestion
are defecated from the anus via the rectum.

6. The Digestive Process:
The start of the process - the mouth: The digestive process
begins in the mouth. Food is partly broken down by the process of
chewing and by the chemical action of salivary enzymes.
On the way to the stomach: the esophagus - After being
chewed and swallowed, the food enters the esophagus. The
esophagus is a long tube that runs from the mouth to the
stomach. It uses rhythmic, wave-like muscle movements to force
food from the throat into the stomach. This muscle movement
gives us the ability to eat or drink even when we're upside-down.
In the stomach - The stomach is a large, sack-like organ that
churns the food and bathes it in a very strong acid . Food in the
stomach that is partly digested and mixed with stomach acids is
called chyme.

7. InIn
In the small intestine - After being in the stomach, food enters the
duodenum, the first part of the small intestine. It then enters the jejunum
and then the ileum . In the small intestine, bile , pancreatic enzymes, and
other digestive enzymes produced by the inner wall of the small intestine
help in the breakdown of food.
In the large intestine - After passing through the small intestine, food
passes into the large intestine. In the large intestine, some of the water
and electrolytes are removed from the food. Many microbes (bacteria like
Bacteroides, Lactobacillus acidophilus, Escherichia coli, and Klebsiella) in
the large intestine help in the digestion process. The first part of the large
intestine is called the cecum , Food then travels upward in the ascending
colon. The food travels across the abdomen in the transverse colon, goes
back down the other side of the body in the descending colon, and then
through the sigmoid colon.
The end of the process - Solid waste is then stored in the rectum until it is
excreted via the anus.

8. DIGESTIVE ENZYMES
Digestive systems are enzymes that break down polymeric
macromolecules into their smaller building blocks, in order to facilitate
their absorption by the body. Digestive enzymes are found in the
digestive tracts of animals (including humans) and in the traps of
carnivorous plants, where they aid in the digestion of food, as well as
inside cells, especially in their lysosomes, where they function to
maintain cellular survival. Digestive enzymes are diverse and are found
in the saliva secreted by the salivary glands, in the stomach secreted
by cells lining the stomach, in the pancreatic juice secreted by
pancreatic exocrine cells, and in the intestinal (small and large)
secretions, or as part of the lining of the gastrointestinal tract.

9. The digestive system is where vitamins, nutrients and minerals are
absorbed.Factors such as stress, lack of sleep, antibiotics, illness,
aging and poor diet choices can often lead to an imbalance of the
bacteria in your digestive tract. Maintaining a a healthy digestive
system any time of year can be quite challenging, especially during
the holiday season with typical eating patterns. Consuming an
abundance of rich and indulgent foods compromises our digestive
health by flooding our bodies with large amounts of fat and
sugar. High fat holiday foods not only stay in the digestive system
longer, but also cause more stomach acid to be produced, which
can lead to gastric reflux and other issues.
IMPORTANCE OF DIGESTIVE SYSTEM

10. :

Acid reflux
Hemorrhoid
Diarrhea
Constipation
DIGESTIVE PROBLEMS

11. TIPS TO HELP STRENGTHENYOUR DIGESTION
• Eat some raw and some cooked foods daily.
• Eat small meals often.
• Limit cold foods and cold drinks, and try to limit liquid during
your meal.
• Limit dairy and meat.
• Avoid eating proteins and grains and/or starchy vegetables in
the same meal.
• Avoid bread and pasta.
• Eat fermented foods and drink probiotic beverages.
• Use digestive enzymes.
• Use ginger, cinnamon, and turmeric.