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Digestive System: Digestive System Secretion

1. Both the sympathetic and parasympathetic divisions of the ANS stimulate the salivary glands.

a. True

b. False

2. Parasympathetic innervation to the salivary glands is transmitted by cranial nerves number _______ and _______.

3. ________ division innervation stimulates watery, enzyme-rich saliva secretion, whereas ________ division innervation stimulates a mucus-rich, more viscous saliva secretion.

4. Label the figure below with the terms parasympathetic and sympathetic.

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5. The four main components of gastric juice are:

1. _________________________

2. _________________________

3. _________________________

4. _________________________

6. Place the following labels on the figure below:

parietal cell: HCl + IF, chief cell: pepsinogen, paracrine cell: histamine, mucus neck cells

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7. Gastrin-producing G cells are found in the gastric glands located in the ________ region of the stomach.

8. Match the following pairs of terms:

CCK and secretin—bicarbonate pancreatic juice and enzyme-rich pancreatic juice

9. Pancreatic __________ is responsible for the majority of fat digestion.

10. List the three major proteases (inactive forms) secreted by the exocrine pancreas:

1. _________________________

2. _________________________

3. _________________________

11. Intestinal ________ converts (activates) trypsinogen into trypsin.

12. The pancreatic hormone _______ regulates the absorptive state, while ______ regulates the postabsorptive state.

13. The single digestive function of the liver is to produce _____.

14. List the four organic components of bile.

1. _________________________

2. _________________________

3. _________________________

4. _________________________

15. Intestinal digestive enzymes that are embedded in the epithelial microvilli membranes are called ________ ________ enzymes.

16. Acid in the intestine causes the release of ______.

17. The intestinal hormone _____ causes contraction of the gallbladder and release of bile into the duodenum.

18. _______ _______ protects the wall of the large intestine from mechanical damage and from damage by bacterial acid.