11) Which of the following modifications increases surface area in the small intestine with fingerlike extensions of the mucosa:

A) villi

B) rugae

C) haustra

D) circular folds

E) sphincters

12) The small intestine extends from the:

A) cardioesophageal sphincter to the pyloric sphincter

B) pyloric sphincter to the ileocecal valve

C) ileocecal valve to the appendix

D) appendix to the sigmoid colon

E) cardioesophageal sphincter to ileocecal valve

13) What two organs release secretions into the duodenum of the small intestine:

A) pancreas and spleen

B) appendix and Peyer’s patches

C) liver and pancreas

D) cecum and appendix

E) spleen and liver

14) Enzymes and bile are carried by the pancreatic duct and bile duct into the:

A) duodenum

B) jejunum

C) ileocecal valve

D) ileum

E) large intestine

15) The primary function of the small intestine is:

A) absorption of nutrients

B) absorption of water

C) waste secretion

D) vitamin conversion

E) mineral secretion

16) Which one of the following is NOT a modification (which is designed to increase surface area for absorption) within the small intestine:

A) microvilli

B) villi

C) Peyer’s patches

D) circular folds

E) plicae circulares

17) Which one of the following is NOT a subdivision of the large intestine:

A) cecum

B) appendix

C) duodenum

D) colon

E) rectum

18) The organ responsible for drying out indigestible food residue through water absorption and the elimination of feces is the:

A) stomach

B) large intestine

C) small intestine

D) pancreas

E) liver

19) What is the purpose of mastication:

A) to eliminate undigested food wastes from the body

B) to propel food from one digestive organ to the next

C) to transport nutrients into the blood and lymph

D) to chew, grind and tear food into smaller pieces while in the mouth

E) to move food back and forth along the walls of the small intestine

20) Amylase is an enzyme that is only able to digest:

A) protein

B) starch

C) fat

D) vitamins

E) minerals