Digestive System

Dhevin Ramnauth 2nd period Pap Biology Ms.McCarroll

Digestive System


The function for this system is the turning of food into energy we need to survive and the packaging for waste disposal.

Functions the organs:

Mouth- It helps break down the food into pieces making it by chewing which helps digest the more easier.

Esophagus- to carry food,liquids, and saliva from the mouth to the stomach.

Stomach- secretes acid and enzymes that digest food. It also churns food.

Small Intestine- 20 feet long, absorbs most of the nutrients from what we drink and eat.

Large Intestine-absorbs water from wastes, eventually creating stool.

Anus- the opening where basically gas comes out exiting the body.

Liver-filtering the blood coming from the digestive tract, before passing it to the rest of the body.

Pancreas- there are two functions, the helping in digestion, and regulation of blood sugar.

Gallbladder-the storing and concentration of bile

Major Disorders


  • Gastroesophageal Reflux Disease (GERD) - weakness of the valve between esophagus and stomach, allowing stomach acid backup into the esophagus irritating and inflame the lining. Symptoms are bloating , bloody vomiting, dysphagia. The prevalence range is 10% to 20%. Treatment options can be surgery, antacids, medications prescribed.
  • Crohn's Disease- Chronic inflammatory disease mainly the bowel. Symptoms- diarrhea, abdominal pain, rectal bleeding. The prevalence is 1.6 million patients diagnosed with IBD.Treatment options can be medication, antibiotics.

Large Food Molecules

Digestion of large molecules is essential because, eventually these molecules would be broken down into smaller forms. Making it easier to digest the food.


Enzymes are needed to speed up the process of the digesting by breaking down particles.