A&P II Notes
The Digestive System: Motility
1. The process by which food is received into the GI tract via the mouth is called ingestion.
a. True
b. False
2. Swallowing has both voluntary and involuntary components
a. True
b. False
3. The function of the epiglottis is to prevent a bolus from entering the trachea.
4. The first wave of contraction of the esophageal muscles is called primary peristalsis.
5. If a food bolus does not make it all the way to the stomach, secondary peristalsis forces the bolus the remainder of the way.
6. Peristaltic contractions of the stomach occur about 3-5 times per minute when food makes it into the body & fundus.
7. The frequency of peristaltic contractions is regulated by pacemaker cells.
8. Gastric emptying would be slowed by which of the following:
a. Fats in the duodenum
b. Acids in the duodenum
c. Hypertonic solutions in the duodenum
d. Distention of the duodenum
e. All of the above
9. Nerves regulate gastric juice secretion during the cephalic phase.
10. *Now would be a great time to fill in the interactive table on page 7 of the Motility topic.
11. The cephalic phase of digestion is regulated by short reflexes
a. True
b. False.
12. The vagus nerve carries electrical signals from the brain to the stomach.
13. The hormone gastrin regulates gastric secretion during the gastric phase of digestion.
14. Gastric motility increases as the stomach begins to receive food.
15. The hormone CCK released by the duodenum cause gastric motility to decrease when fats are present in the duodenum.
16. The hormone CCK causes the gall bladder to contract and release bile into the small intestine.
17. The enterogastric reflex describes the communication between the intestine and the stomach.
18. Sympathetic nervous system stimulation decrease digestive system activity.
19. The motility process illustrated below is segmentation.
20. Segmentation moves chyme in only one direction.
a. True
b. False
21. The frequency of
1. The process by which food is received into the GI tract via the mouth is called ingestion.
a. True
b. False
2. Swallowing has both voluntary and involuntary components
a. True
b. False
3. The function of the epiglottis is to prevent a bolus from entering the trachea.
4. The first wave of contraction of the esophageal muscles is called primary peristalsis.
5. If a food bolus does not make it all the way to the stomach, secondary peristalsis forces the bolus the remainder of the way.
6. Peristaltic contractions of the stomach occur about 3-5 times per minute when food makes it into the body & fundus.
7. The frequency of peristaltic contractions is regulated by pacemaker cells.
8. Gastric emptying would be slowed by which of the following:
a. Fats in the duodenum
b. Acids in the duodenum
c. Hypertonic solutions in the duodenum
d. Distention of the duodenum
e. All of the above
9. Nerves regulate gastric juice secretion during the cephalic phase.
10. *Now would be a great time to fill in the interactive table on page 7 of the Motility topic.
11. The cephalic phase of digestion is regulated by short reflexes
a. True
b. False.
12. The vagus nerve carries electrical signals from the brain to the stomach.
13. The hormone gastrin regulates gastric secretion during the gastric phase of digestion.
14. Gastric motility increases as the stomach begins to receive food.
15. The hormone CCK released by the duodenum cause gastric motility to decrease when fats are present in the duodenum.
16. The hormone CCK causes the gall bladder to contract and release bile into the small intestine.
17. The enterogastric reflex describes the communication between the intestine and the stomach.
18. Sympathetic nervous system stimulation decrease digestive system activity.
19. The motility process illustrated below is segmentation.
20. Segmentation moves chyme in only one direction.
a. True
b. False
21. The frequency of