21) The number of permanent teeth within a full set of adult teeth is:

A) 20

B) 24

C) 28

D) 32

E) 36

22) The anterior chisel-shaped teeth that are adapted for cutting are called:

A) incisors

B) canines

C) premolars

D) molars

E) wisdom teeth

23) Which accessory digestive organ is situated retroperitoneal:

A) liver

B) gallbladder

C) salivary glands

D) pancreas

E) spleen

24) Bile is produced by the __________ but stored in the __________.

A) liver; pancreas

B) gallbladder; liver

C) liver; gallbladder

D) small intestine; pancreas

E) gallbladder; pancreas

25) Which tube brings bile directly back into the gallbladder for storage when there is no digestion occurring in the duodenum:

A) common bile duct

B) main pancreatic duct

C) cystic duct

D) accessory pancreatic duct

E) common hepatic duct

26) The sequence of steps by which large food molecules are broken down into their respective building blocks by catalytic enzymes within hydrolysis reactions is called:

A) ingestion

B) propulsion

C) mechanical digestion

D) chemical digestion

E) absorption

27) The propulsive process that moves food from one organ to the next is called:

A) ingestion

B) peristalsis

C) chemical digestion

D) mastication

E) absorption

28) The process by which food within the small intestine is mixed with digestive juices by backward and forward movement across the internal wall of the organ is called:

A) peristalsis

B) segmentation

C) defecation

D) chemical digestion

E) absorption

29) Which one of the following is NOT one of the carbohydrates that the human digestive system is able to break down to simple sugars:

A) cellulose

B) sucrose

C) lactose

D) maltose

E) starch

30) Proteins are digested to their building blocks which are called:

A) peptides

B) amino acids

C) polypeptides

D) fatty acids

E) glycerol