Published on October 16, 2007
THE DIGESTIVE SYSTEM A Study Guide Mr. Ardito’s Living Environment
The purpose of the Digestive System To make big things into small things
The Parts of the Digestive System
The Mouth Teeth grind food into swallowable substance (bolus) Enzymes in saliva start to break down starches.
Esophagus Muscular contractions move the bolus to the stomach These contractions are called peristalsis No new digestion occurs
Stomach Stomach is very muscular and churns the food into a paste (chyme). Stomach makes acid which helps break down proteins.
Small Intestine No new mechanical digestion takes place. Enzymes break down proteins, starches, and fats Nutrients are absorbed into the bloodstream via the villi.
Large Intestine Undigested food (now called feces)passes into the large intestine. Water, minerals, and vitamins are reabsorbed.
Anus/Rectum The rectum stores feces until it is ready to be released. The anus is the opening through which feces is released.
Types of Digestion Part Mechanical Chemical Enzymes from Mouth Chewing saliva None (still Esophagus None continuing from mouth) Acid from gastric Stomach Churning of Food juice Small Intestine None Enzymes Reabsorption of Large Intestine None water and minerals
Enzymes Enzymes are chemicals that speed up chemical reactions. Enzymes used in digestion help break big things into small things. 3 types of enzymes Proteases - act on proteins Amylases - act on starch Lipases - act on fats
Review system allows players to seek reviews, by the third umpire, of decisions by the on-field umpires on whether or not a batsman has been dismissed
Ardito Science; log in help. ... Body Systems Overview. The Digestive System. ... Surface Area to Volume Ratio. LE Year in Review . Recent Activity
The Living Environment Ardito/Sweeney Human Body ... us about the normal functioning of the system System by System Review: ... The Digestive System ...
Ardito Digestive System Review. Ardito medical writing. Alexander. Login or Join. Processing Login successful. The system will automatically switch to the ...
Digestive System Vocabulary Review The Living Environment - NYS 1.2 â The student should be able to describe and explain the structures and functions of ...
Ardito Science / Body ... Check out this #Kahoot called 'Human Body Systems Review' on ... The human digestive system converts food into nutrients ...
• The small intestine includes the duodenum, jejunum, and ileum. o Duodenum: In anatomy of the digestive system, the duodenum is a hollow jointed tube ...