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BIO 202L Lab 16 Worksheet- The Digestive System
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BIO 202L Lab 16 Worksheet- The Digestive System///BIO 202L Lab 16 Worksheet- The Digestive System///BIO 202L Lab 16 Worksheet- The Digestive System
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Lab 16 The Digestive System BIO202LStudent Name: Cassandra Jaspers
Access Code (located on the lid of your lab kit): AC-PS94QVY
Pre-Lab Questions:
”1. Explain the digestion that occurs in the oral cavity.”
The tongue moves food into the mouth and the teeth masticate the food. Salivary glands in the mouth
assist mastication, moisten the mouth, and prepare the food for digestion. The digestive aspect of saliva
is an enzyme called salivary amylase. This enzyme breaks down covalent bonds between glucose and
other polysaccharides to produce disacchardies.
”2. What is the function of the liver in digestion? ”
The liver produces bile to neutralize stomach acid and emulsify lipids. As a result, the stomach acid
entering the duodenum is more neutral.
”3. What role does the gall bladder play in digestion? ”
The Gallbladder stores bile secreted by the liver. The bile is deposited into the small intestine after eating
food to help digest the acid.
”4. Why is the orientation of muscle of the stomach wall important? How does this contribute to its
function? ”
The orientation of the stomach wall is important because it aids peristalsis and directs the movement
of food through the digestive system.
Experiment 1: Microscopic Anatomy of the Digestive System
Post-Lab Questions
”1. Label the items in the following slide pictures. ”
A- Lamina propria
B- Epithelia
C- Submucosa
D- Mucosa
E- Submucosa
, Lab 16 The Digestive System BIO202L
”2. What is unique about the small intestine mucosa? ”
The luminal surface of the small intestine mucosa is covered completely by a villa.
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