Name _____________________________________
Per ___
Lab Table # ____
Digestive System Introduction
This guide is designed to orient you with some of the major digestive structures and processes that are
common to the human and visible on the rat. We will be examining each of these structures throughout
the next few weeks. We will be delving more deeply into these concepts with the fetal pig dissection
(this is just an overview on the rat).
Directions:
1.
2.
3.
4.
Open “Anatomy and Physiology” module from the Desktop
Click on “Course Topics”
Click on “38-42: Digestive System”
Click on the following TABS and
a. view the video
or
b. look at the picture
and read the accompanying text or
c. manipulate the 3D images
and click on each of the links
38.1 Digestive Overview video (video)

What is the term for partially digested food, enzymes and acids?
38.2 Digestive Anatomy (3D)
38.3 Digestive Process (3D)

Where does mechanical digestion start?

What is food broken-down into in the stomach (term)?

What is absorbed in the small intestine?

What is absorbed in the large intestine?
38.4 Alimentary Canal (picture)

From esophagus to anus, list all of the sections of the alimentary canal in order:
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38.5 Digestive Juices (picture)

list the five main digestive juices:
o
o
o
o
o
38.6 Production of Digestive Juices (3D)

list the six main organs that secrete digestive juices:
o
o
o
o
o
o
39.3 Chewing and Swallowing (video)
39.13 Epiglottis and Larynx (3D)

What structure prevents choking?
40.1 Peristalsis (video)

What is the term for the contraction and relaxation of muscles that push material through the
alimentary canal?
40.2 Peristalsis of Alimentary Canal (3D)
40.3 Esophagus (3D)
40.4 Stomach Regions (picture)
40.5 Stomach Wall (3D)
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40.6 Stomach Sphincters (3D)

What structure does food go through when it enters the stomach?

What structure does food go through when it exits the stomach?
41.1 Accessory Organs (3D)
41.4 Hepatic Portal System (3D)

Where does the hepatic portal system take blood from?

Where does the hepatic portal system take blood to?
42.1 Absorption (video)

What structures absorb most of nutrients in the small intestine?
42.2 Absorption Structures (3D)
42.3 Intestinal Vasculature (3D)
42.4 Small Intestine (3D)

What are the three sections of the small intestine (in order)?
o
o
o
42.5 Large Intestine (3D)

What are five regions of the large intestine?
o
o
o
o
o
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42.6 Colon Regions (3D)

What are the four regions of the colon?
o
o
o
o
42.7 Taenia Coli (3D)
42.8 Large Intestine (picture)
42.9 Defecation reflex (3D)
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