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: 
1. ___________________________________________________________________ 
2. ___________________________________________________________________ 
 27. Pockets formed by the contractions of the transverse and descending colon musculature are 
called __________________. 
 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, 
appendix  
 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. 
1. ______________________________________________________________________ 
2. ______________________________________________________________________ 
3. ______________________________________________________________________ 
 34. The vomiting reflex is coordinated in the ___________________ ____________________. 
 35. Which of the following is not typically a stimulus for the vomiting reflex?