Lab 9 – Review Questions

Review Exercise

1.  Match the following to the substrate, cell type or reaction. One word may be used twice.

Peristalsis          Segmentation         Mechanical             Chemical              Polysaccharides
Protein               Lipids                         Carbohydrates       Absorption          Buccal cavity
Endocrine          Exocrine                    Liver                          Portal triads        lobule

_______________________________  1. One of the main functions of the small intestine is the ________of nutrients.
_______________________________2. Digestion of _______________ begins in the stomach.
_______________________________3. The first part of the GI tract involved in physical breakdown of food.
_______________________________4. This is the complex form of carbohydrates which must be hydrolyzed.
_______________________________5. Saliva has the enzyme responsible of breaking these down.
_______________________________6. Made up a branch of portal vein, hepatic artery and bile duct.
_______________________________7. Production of glucagon and insulin is the __________ function of the pancreas.
_______________________________8. Responsible for propelling food down the GI tract.
_______________________________9. The absorption of this macromolecule used for energy besides proteins and carbohydrates.
_______________________________10. Secretion of this digestive enzymes is the ______________ of the pancreas.
_______________________________11. This movement of the small intestine is primarily involved in mixing of food.
_______________________________12. The functional unit of the liver.
_______________________________13. This form of digestion does not involved enzymes.
_______________________________14. These are absorbed through lacteals.
_______________________________15. Largest gland in the body involved in metabolism.

2.  Match the following to the substrate, cell type or reaction. One word may be used twice.

Amylase           Lipase                    Bile                   Trypsin                   Pepsinogen
Insulin              Glucagon               Trypsin             Pepsin                   Hydrochloric acid

1. Produced by parietal cells of the stomach.              ________________________________
2. Breaks down peptides in the duodenum.                _______________________________
3. Breakdown fats and oils.            _______________________________
4. Requires for activation of pepsinogen.         _______________________________
5. Enzyme released by the pancreas for breakdown of proteins.    _______________________________
6. Enzyme involved in breaking down of starch.   _______________________________
7. Released by the pancreas after a meal.   _______________________________
8. Released by the pancreas after not eaten for a while.   _______________________________
9. Found in the stomach and hydrolyze proteins.   _______________________________
10. Released by the chief cells.   _______________________________

3.  Indicate the location where each of the enzymes listed below is active.  

1. salivary amylase ______________________
2. trypsin ______________________
3. salivary lipase ______________________
4. pancreatic amylase ______________________
5. pepsin ______________________
6. pancreatic lipase ______________________
7. brush border enzymes ______________________

4.  Label the following diagrams using the words given for each.
Lesser omentum          Visceral peritoneum             Parietal peritoneum
Small intestines           Mesenteries                             Stomach
Transverse colon          Greater omentum                 Liver
Diaphragm                     Pancreas                                   Rectum

Credit: https://commons.wikimedia.org