11.Where is the epiglottis located?

a.throat

b.bile duct

c.pancreatic duct

d.lower esophagus

12.What structure separates the colon from the small intestine?

a.pylorus

b.ileocecal valve

c.gastric retainer

d.rectal sphincter

13.What structure controls the release of material from the stomach to the small intestine?

a.ileocecal valve

b.pyloric sphincter

c.diaphragmatic valve

d.esophageal sphincter

14.What part of the GI tract prevents a person from choking while swallowing?

a.mouth

b.epiglottis

c.pyloric sphincter

d.upper esophageal sphincter

15.What structure functions to prevent entrance of food into the trachea?

a.tongue

b.epiglottis

c.cardiac sphincter

d.trachea sphincter

16.Which of the following is a function of the appendix?

a.It ferments fibre.

b.It stores lymph cells.

c.It slows down peristalsis.

d.It stores preformed stools.

17.What is a bolus?

a.enzyme that hydrolyzes starch

b.portion of food swallowed at one time

c.device used to analyze the contents of the stomach

d.sphincter muscle separating the stomach from the small intestine

18.A bolus is conducted past the diaphragm through which of the following parts.

a.epiglottis

b.stomach

c.esophagus

d.large intestine

19.Which of these is one function of the pyloric sphincter?

a.secrete acid into the stomach

b.secrete hormones into the stomach

c.prevent the contents of the small intestine from backing up into the stomach

d.prevent the contents of the small intestine from emptying too quickly into the colon

20.Which of the following structures controls the passage of material from the small intestine to the large intestine?

a.pyloric valve

b.ileocecal valve

c.colonic sphincter

d.jejunal sphincter