How does digestion work?
The digestive system is made up of the digestive tract—a series of hollow organs joined in a long, twisting tube from the mouth to the anus—and other organs that help the body break down and absorb food (see figure). Organs that make up the digestive tract are the mouth, esophagus, stomach, small intestine, large intestine—also called the colon—rectum, and anus. Inside these hollow organs is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food. The digestive tract also contains a layer of smooth muscle that helps break down food and move it along the tract.
When you eat foods—such as bread, meat, and vegetables—they are not in a form that the body can use as nourishment. Food and drink must be changed into smaller molecules of nutrients before they can be absorbed into the blood and carried to cells throughout the body. Digestion is the process by which food and drink are broken down into their smallest parts so the body can use them to build and nourish cells and to provide energy. Digestion involves mixing food with digestive juices, moving it through the digestive tract, and breaking down large molecules of food into smaller molecules.
When you eat foods—such as bread, meat, and vegetables—they are not in a form that the body can use as nourishment. Food and drink must be changed into smaller molecules of nutrients before they can be absorbed into the blood and carried to cells throughout the body. Digestion is the process by which food and drink are broken down into their smallest parts so the body can use them to build and nourish cells and to provide energy. Digestion involves mixing food with digestive juices, moving it through the digestive tract, and breaking down large molecules of food into smaller molecules.
Knowing your digestive system:
Week of Nov. 12th-16th:
*Monday, Nov. 12-
Begin working on digestive system brochures. They will be due Friday the 16th and need to be submitted via EMAIL!
*Tuesday, Nov. 13th-
Digestive System story.
Continue to work on Brochures.
Continue to work on Brochures.
*Wednesday, Nov. 14th-
Career Shadowing Day!
*Thursday, Nov. 15th-
Field Day! Brochures are due TOMORROW!
*Friday, Nov. 16th-
Digestive System brochures due! These have to be emailed to me (by Friday) to receive credit. If you have created a website, then you will need to email me the address to your website.
Digestive System quiz!
Digestive System quiz!
Week of Nov. 7th-9th:
*Wednesday, Nov. 7th-
Introducing the digestive system! Powerpoint presentation and notes-
Digestive System Notes! | |
File Size: | 187 kb |
File Type: | docx |
*Thursday, Nov. 8th-
Brain POP! for the digestive system, includes video, notes, and quiz.
Copy digestive system vocabulary found below, definitions can be found in your notes.
Copy digestive system vocabulary found below, definitions can be found in your notes.
Digestive System Vocabulary:
Teeth
Salivary Glands
Tongue
Esophagus
Stomach
Liver
Mechanical Digestion
Chemical Digestion
Gall Bladder
Pancreas
Small Intestine
Large Intestine
Anus
Salivary Glands
Tongue
Esophagus
Stomach
Liver
Mechanical Digestion
Chemical Digestion
Gall Bladder
Pancreas
Small Intestine
Large Intestine
Anus
*Friday, Nov. 9th-
*Quiz on Circulatory & Respiratory System Vocab.
Digestive System BrainPOP!
Digestive System BrainPOP!