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The Digestive System - Unit 12

The Digestive System - Unit 12

Author: Nate Holz

The digestive system breaks down ingested food into particles small enough to be absorbed into the blood. This lesson will look at the anatomy of the digestive system, including the accessory organs involved in digestion, as well as the physiology of digestion.

This lesson is broken down into three lectures (powerpoint), video clips, unit assignments, as well as a checklist to aide you in completing the lesson.

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Self Study Unit

For this unit you will use "on-line" resources to develop an understanding of the digestive system. The digestive system is chapter 14 in your textbook. Ten hand-outs will be provided in class and you can also find them via the google drive link provided below. The test for this unit is Wednesday, 5/17.

Class Log:

  • Monday (5/8): Hand-outs provided (2): Digestion System Concept Map (1.01), and a fill-in outline for part 1 notes (1.02) (see my powerpoint notes below.)
  • Wednesday (5/10): Handed out two papers, both digestive sys labeling (1.03) & (1.04)
  • Friday (5/12): Two more papers - both note outlines for Dig. Sys notes 2 (1.05) & 3 (1.06)

Your Assignments for this Unit, Including your Cover Sheet

Most or all of your assignments for this unit can be found on google drive. Use this link to navigate to my google drive:


Source: Bob Grove

Digestive System Part 1: The Anatomy of...

This lecture looks at the organs of the alimentary canal and accessory digestive organs. You should be able to identify each on an appropriate diagram or model.

Source: Bob Grove

Notes for Lecture Part 1

Fill out the note page as you are viewing the lecture.


Source: Bob Grove

Digestive System Part 2: Accessory Organs of...

After viewing this lecture you should be able to list the accessory digestive organs and describe the general function of each. This lecture looks at the teeth, saliva, pancreas, liver, and gall bladder.

Source: Bob Grove

Notes for Lecture Part 2

Fill out the page as you are viewing the lecture.


Source: Bob Grove

Digestive System Part 3: Functions of...

This lecture looks at the two types of digestion, mechanical and chemical, and the role each digestive organ plays in digestion.

Source: Bob Grove

Notes for Lecture Part 3

Create a concept map of lecture notes part 3.


Source: Bob Grove

Crash Course Anatomy: Digestive System, Part 1

Nachos are delicious. And versatile because today they're also going to help us learn a thing or two about your digestive system. Nachos can provide us with energy and raw materials, by first ingesting something nutritious, propelling it through the alimentary canal where it will be mechanically broken down, and chemically digested by enzymes until my cells can absorb their monomers and use them to make whatever they need. And eventually, there will be pooping.

Source: Hank Green and CrashCourse

Crash Course Anatomy: Digestive System, Part 2

Nearly 200 years ago, Alexis St. Martin was shot in the stomach. He was saved by local army doctor William Beaumont, but had to live out his remaining years with a gaping hole in the stomach -- allowing Beaumont to learn a lot about how human digestion works. So today we're going to walk you through that process. We'll cover how mechanical and chemical digestion start in the mouth and continues in the stomach, where it’s pummeled by acids and enzymes and turned into chyme. We will also go over the stomach’s cephalic, gastric, and intestinal phases of digestive regulation.

Source: Hank Green and CrashCourse

Crash Course Anatomy: Digestive System, Part 3

Nachos are great...if you are among the lucky ones whose body can digest them. When digestion goes according to plan, the small intestine performs most of your chemical digestion in the duodenum, while accessory organs including the liver, gallbladder, and pancreas contribute enzymes that all but finish the job. Then your large intestine, which is actually shorter than the small intestine, tries to extract the last bit of nutrition, including the occasional attempt to turn nachos into energy, which for most humans, ends in gassy failure.

Source: Hank Green and CrashCourse

Bozeman Science-The Digestive System

Paul Andersen starts with a brief description of feeding methods. He then details all of the major parts within the human digestive system. This tour starts in the mouth, move down the esophagus, through the stomach, small investing, colon and rectum. He explains how all of the major macromolecules are digested and absorbed by the body.

Source: Paul Andersen of Bozeman Science

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Vsauce3: How Much Can You Eat?

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Vsauce: What Does Human Taste Like?

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2014 Hot Dog Eating Contest

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Why Not Eat Insects Marcel Dicke makes an appetizing case for adding insects to everyone's diet. His message to squeamish chefs and foodies: delicacies like locusts and caterpillars compete with meat in flavor, nutrition and eco-friendliness.

Source: Ted Talk - Marcel Dicke

Laparoscopic Gastric Bypass - Simulated

A gastric bypass is a surgical procedure designed to support an obese patient with weight control. This surgery involves creating a small stomach pouch from the existing stomach and attaching it to the small intestine. During this interactive laparoscopic gastric bypass surgery, you will oversee every aspect of the procedure. When you are finished you will learn important information regarding gastric bypass recovery and gastric bypass diets. Whenever you are ready, scrub in, put on your gloves, and grab your endoscopic camera so we can get started!

Source: Surgery Squad on YouTube

Laparoscopic Gastric Bypass - For Real

Source: Dennis Smith, MD