BIO1014_W6_Lab_Motility – Interactive Physiology Worksheet:. PLEASE HELP WITH THE ANSWERS FOR THIS WORKSHEET.
1. The process by which food is received into the GI tract via the mouth is called _______________.
2. The esophagus is digestive in function. ______________.
3. Swallowing has both voluntary and involuntary components. ____________.
4. The function of the epiglottis is to prevent a bolus from entering the ______________________.
5. The first wave of contraction of the esophageal muscles is called ___________ ______________.
6. If a food bolus does not make it all the way to the stomach, _____________________ peristalsis
forces the bolus the remainder of the way.
7. Peristaltic contractions of the stomach occur about ___________ times per minute when food
makes it into the body and fundus.
8. The frequency of peristaltic contractions is regulated by ____________________________ cells.
9. Gastric emptying would be slowed by which of the following?
10. ______________ regulate gastric juice secretion during the cephalic phase.
11.The cephalic phase of digestion is regulated by short reflexes. ___________.
12. The ____________________ nerve carries electrical signals from the brain to the stomach.
13. The hormone ________________________________ regulates gastric secretion during the
gastric phase of digestion.
Page 1 of 4 BIO1014 Anatomy and Physiology II Lab © 2013 South University
14. Gastric motility ______________________________ as the stomach begins to receive food.
15. The hormone ______________________________ released by the duodenum causes gastric
motility to decrease when fats are present in the duodenum.
16. The hormone __________________________ causes the gallbladder to contract and release bile
into the small intestine.
17. The ________________________________________ reflex describes the communication
between the intestine and the stomach.
18. Sympathetic nervous system stimulation ______________________ digestive system activity.
19. The motility process illustrated below is ____________________________________.
20. Segmentation moves chyme in only one direction. __________.
21. The frequency of segmentation contractions is greatest in the __________________________.
22. ______________________________ reflexes stimulate the ileum to increase activity when food
is in the stomach.
23. The hormone _______________ causes the ileocecal sphincter to relax during the gastric phase.
24. During the interdigestive period, ____________ _________________ _____________ occur
about once every 90 minutes to move undigested materials toward the terminal ileum.
25. Migrating motility complexes are controlled by the central nervous system. ___________.
Page 2 of 4 BIO1014 Anatomy and Physiology II Lab © 2013 South University
26.List the two major functions of the large intestine:
27. Pockets formed by the contractions of the transverse and descending colon musculature are
28. Sustained, intense propulsive peristaltic contractions of the large intestine are called
29. Which of the following is under voluntary control? ____________________________________.
30. Only about __________ ml of the 500 ml of chyme that entered the colon is voided as feces.
31. Place the following labels on the large intestine figure below:
cecum, ascending colon, transverse colon, descending colon, sigmoid colon, rectum, haustra,
32. The _______________________________ reflex stimulates mass movements of the colon.
Page 3 of 4 BIO1014 Anatomy and Physiology II Lab © 2013 South University
33. List three emotions or sensations that may produce constipation.
34. The vomiting reflex is coordinated in the ___________________ ____________________.
35. Which of the following is not typically a stimulus for the vomiting reflex?
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