THE DIGESTIVE SYSTEM QUIZ

Which of the following is an accessory organ of digestion?

pancreas

Digestion refers to the

mechanical and chemical breakdown of food

Which of the following is NOT a function of the digestive system?

filtration

A feature of the digestive tract wall that increases surface area available for absorption is the

circular folds

Which organ is responsible for dehydration and compaction of indigestible materials?

large intestine

The greater omentum is

a fatty sheet that hangs like an apron over the abdominal viscera

Parietal cells secrete

hydrochloric acid

Put the following layers of the digestive tract wall in order from the lumen to the deepest layer

4, 1, 6, 3, 2, 5

Digestive (mucous) epithelium

Lamina Propria

Muscularis mucosae

Submucosa

Muscularis externa

Serosa

Which accessory organ of the digestive system does NOT produce any enzymes or digestive secretions?

teeth

The movement of nutrients from the digestive tract lumen across the epithelium is called

absorption

Upon swallowing, food moves from the mouth directly into the

oropharynx

Functions of the stomach include all of the following EXCEPT

absorption of triglycerides

Chief cells secrete

pepsinogen

G cells of the stomach secrete

gastrin

The enzymes pepsin digests

proteins

Which of the following descriptions BEST matches the term gastrin?

stimulates gastric secretion

D cells release _______, which inhibits the release of gastrin

somatostatin

Which is NOT a reason the stomach is acidic?

Emulsification of lipids

Which of the following is TRUE regarding digestion and absorption in the stomach?

Protein digestion begins in the stomach

Identify the INCORRECT pairing

liver; produces intrinsic factor

Which is NOT true of pancreatic enzymes?

Their primary site of action is the pancreas

In response to the arrival of acidic chyme in the duodenum, the

blood levels of secretin rise

The majority of nutrient absorption occurs in the

small intestines

Functions of the large intestine include

reabsorption of water and compaction of feces

Which of the following is NOT a digestive enzyme?

bile